Lock Mode, when activated, locks the buttons preventing inadvertent setting changes. Is the Optics Ready slide on the Plus cut for RMSc or SMS? There were no apparent flaws, flexing, or rattling to be found. If you would like to proceed without signing in, you can checkout as a guest. . There is a reason it is small. Install Spacer at the front or rear of the optic recess in the slide per the table. Designed exclusively to fit Holosun 407k/507k and any red dot with the same footprint. They should not be hammered on some forum about how people should not buy their equipment and people for that company should be firedbecausepeople cant or dont research on what they are buying. No complaints until now. The Holosun 507k is the best miniature subcompact pistol optic in terms of reliability and durability, but it will require a mounting plate (or modification to your slide) to mount it on the Hellcat. The HE507K-GR X2 is an open reflex optical sight designed for concealed carry pistol applications. They designed the 407K/507K because there are a limited number of option in regards to red dots when it comes to micro pistols. From body mechanics, sight picture/target acquisition, and all of the elements that comprise successful handgunning, I thought the re-training process was going to be an onerous task. Here, you can see the dimensions and the photo of the footprint. Its good this is a forum and not a review. % Sig tells me the 226 Legion slide optic footprint for the Romeo1 is identical to that on the 320, in which case the C&H adapter plate for the 320 should just drop in with . Holosun 507K is compatible with Shield RMSc/RMS/RMSw/SMS, Sig Romeo Zero Optic, JP Jpoint Optic footprints, cuts, or mounting plates. I was prepared not to like the dot, or for it to take a fair bit of time to achieve substantive acclimation. A search for an adapter plate proved frustrating. Holosun Mounts are available as Absolute and Lower 1/3 Co-witness height mounts with Quick-Release or bolt-on attachments options. The 507c uses the Trijicon RMR footprint and the 507k uses a modified Shield RMSc footprint. The easily-accessible battery tray is a definite boon, and doesnt require removing the sight from the slide to change batteries. I don't think making it hard to find out what fits what is the same as a product being defective. It offered easy concealability and maintained good capacity. This will allow for any, , your only option would be to have your slide milled by a, will mount directly to any slide that is designed for the, Pro footprint and does not utilize recoil, Any aftermarket slide that does not have recoil, K footprint. I hope my recommendations will help guide others to make educated decisions on what products to spend their hard earned money on. This is the same footprint as 507K. NOTE: This base is not compatible with the Holosun 507K. In general, I wouldn't mind if those folks were replaced with people who get it and provide a better customer experience. I have 3 of each and they all fit the milling/mounts I have. It's the best because it's a rugged and reliable optic. Installation was a breeze. The RMRcc is longer and the hole pattern is different. Does this share a mounting footprint like the 507C shar Holosun + Red Dot Sights & Accessories Holosun Red Dot Sights & Accessories + Classic Holosun Classic Red Dot Sights & Accessories . Hopefully other folks will learn, or ask Holosun to be more informative. Please contact Mossberg and ask them whether any modifications are necessary. I haven't had any issues with either. If this is the case, you will need to purchase and install a, footprint features the same dimensions for the mounting holes as the, K footprint. This method will allow for the lowest possible deck height for the optic since no, are other options that are typically more desirable since modification to your slide is not required. I've heard both ways. I currently have a G43X MOS on order that I am going to mount a 507K to. 9 Items . That being said, I'm painfully aware that they use different mounts and do my research. Researched red dots and settled on a a hs507k holosun. For Canadian residents wanting to purchase, . The sights mentioned use a Trijicon RMR platform whereas the new K models have a modification of the Shield footprint instead. All Rights Reserved. If you dont care to do the research it is not their fault if you purchase the incorrect optic for yourrequired application. I took a Dremel and removed the 2 rear recoil lugs and shaved some off the front 2 so I could "DIRECT MOUNT"/co-witness the 507K to my XDS which is the same cut as shield plus. NOTE: HS507K is compatible with some standard mounting . For reasons that escape me, Holosun did not mill the bottom of the 407K or 507K to accommodate the indexing lugs that are found on the Springfield Hellcat. *For this mount to work with the Holosun 407K and 507K, the rear pins on the mount MUST be removed by milling or filing. View as Grid View List View. Qty 2 - M4 Plate Mounting Screws. until now. Your email address will not be published. At Shot Show 2020, Holosun showed us their two new red dot sight models 407K and 507K. But if youre considering an optic for a slim-frame handgun (which you should be), Holosuns red dots absolutely deserve to be in your consideration set. OK, the slide came back from Fabricated Arms today and the 407K mounted nicely. Do u make a 407k model that is solar failsafe and green dot? CZ 75 PCR with Holosun HS 507k installed. No issues so far that I've noticed. - Install a Holosun 407K, 507K & EPS Carry Reflex sight on your Springfield Armory Hellcat or Hellcat Pro pistol - Made from aluminum with a durable Hardcoat anodized finish - All NDZ Performance parts come with a Lifetime Warranty against manufactured . The multi-reticle system, offering the choice of circle-dot, circle only or dot only reticles, was easy to change and I liked the flexibility it provided. The Holosun 507k is a very tiny miniature reflex sight. Good luck! Soon after, I brought home one of my own, and given SIGs inclusion of an optics-ready slide, I elected to equip it with a red dot. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes. Imagine my disappointment when I went to install it on my optics ready firearm. Will this 507K X2 fit on a Mossberg MC2SC without a mount plate ? Youre complaining about it being weak and then say youll use a Romeo Zero or Swampfox instead? Ive read both. it is WHY I went the two (SRO/407). It utilizes existing rear dovetail for fitting sight. Guns like the Hellcat, Sig P365XL, and Glock 43X MOS come from the factory ready to receive this optic. The 6 MOA is cool but the K's are really small, and as mentioned have a unique footprint. For what they offer, these red dot sights are incredibly affordable. You can file down two of the notches on the Glock slide on the 43X MOS to install the Holosun 507k / 407k without an adapter plate. I took it to a professional gunsmith, paid for it to be mounted correctly only to find out that the optic bottoms out and I can not Zero it at 10 yds. Turn around was only one week and the machining is good. Mounts - Holosun offers several mounting solutions for applications ranging from tall AR15 height applications to low shotgun applications. Article Name. Let us know how your P365 slide turns out with the 407k. >> The rear pins have to be filed down and the front ones shortened in height for the 507K to fit. stream Its small because its a Micro dot for Micro pistols. I give Midway credit for maintaining their published price and having free shipping despitethe scarcity of these sights. In fact one MFG ( Bushnell) specifically said that when directly asked.. "Its a trade secret" Took months of people asking if the Burris FFIV would fit the III foot print before getting a straight answer from Burris. EQUIPMENT INCLUDES: HS507K-X2 Classic Multi Reticle Red Dot Sight in Black, multi tool, lens cloth, and user manual. Comparing the sights width to that of my gun, the form factor looked to be a superb fit. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Why Custom Guns Sell Better, Alternative Slide Cut and Cerakote for Glock Service, Optic Cut and Slide Cerakote; Sig P365 or Sig P320. Optics Trade. Holosun designs red dot sights for various tastes, offering premium features such as: In their offer, everyone can find a red dot for their taste it doesnt matter whether you are a beginner or an expert. Rated 5.00 out of 5 based on 5 customer ratings (5 customer reviews) $ 49.95. . I might mill the rear recoil bosses. I knew that is was a direct fit for my P365. We are now offering a modification service to precision mill down some of the post. The loss of factory rear sight was a non-issue, as the Holosun has an integrated backup sight. Notify me of follow-up comments by email. You do not need the rear pins that came with Max-9, the 507k doesn't use them. The 507c would be way too wide fir the Shield Plus. In fact one MFG ( Bushnell) specifically said that when directly asked.. "Its a trade secret" Took months of people asking if the Burris FFIV would fit the III foot print before getting a straight answer from Burris. Now the height on the 507k measures in at 0.95 inches. I emailed them but never heard back so it's good you got a reply. The6 MOA dot is really a good choice for use on small pocket-size guns that will typically be used at short ranges and sometimes in a rush. Holosun products. The Holosun 507K (HS507K), Holosun 407K, EPS Carry, and EPS are very popular red dot sights that have grabbed the attention of the gun community for their innovation, durability, clarity, and useability on carry guns. Those are designed around the 365. You have a 407K (unused and unmounted) that you are preparing to return to Midway USA, correct? ARCHIVED; Posted: 10/22/2020 2:04:54 PM EST Come on Holosun, really? Will it still fit the Canik . AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Also it fits NOTHING ! Did you look into any YouTube reviews? You will then have to modify the adapter plate by removing the rear recoil lugs and shortening the front two. 507K X2 Review. Therefore you will need a red dot that has an RMSc footprint. The threaded holes will not break into any of . Because these are smaller than 407C, 507C, and 508T, Holosun had to use a different footprint. The Sig RomeoZero also has the same footprint/hole pattern. At first it seemed to fix the problem when I got a laser bore sight alignment without any problems or even getting close to max elevation adjustment. Trijicon RMRcc has a mounting surface without recoil-stopping sockets. Download User I'm going to talk with both Holosun & CHPWS about this to see if I go that route. The 507k model features a switchable reticle (2 MOA dot & 2 MOA dot surrounded by a 32 MOA circle & circle only). Was about to pull the trigger on one thinking it would use the RMR footprint, doh. I took the gun to the range and found I had to do a lot of readjustments. Because I properly researched the optic before I purchased it. Andra Gradinik says: 6. I had to get some 6-32 1/2" screws from ACE hardware (shortest ones they had). On 407K, only the central dot is available. Press question mark to learn the rest of the keyboard shortcuts. . So maybe if a few more people called them out, and stopped buying their products the suits would start asking designers and marketers whats going on, or get some new ones and stop alot of this nonsense, This combination is great if you plan on shooting both at short distances (circle) and medium distances where some more precision is required (2 MOA dot). The footprint isn't really unique, it's compatible with the Sig Romeo 0 and Shield RMSC. Well with the Trijicon/Holosun lawsuit they may have to make their own foot print going forward. Be the first to review Holosun 507K (slimline footprint). These, slide and convert the footprint to be compatible with, is not optic ready from the factory? /Shading << /Sh50 50 0 R >> *Must have a registered ARFCOM account to win. Holosun 507c. Anyway, The forumn has my opion, they have yours. We love the low-profile design, 6 MOA dot size, waterproofness, the in-built rear sight, strong housing, Shake Awake, etc. This guide will provide information on the. If youre in the Dallas area, check them out. Here you can browse news and exhibition information about Would appreciate any feedback or additional info that you guys might have. I purchased the 507K 2 months ago. HS507K. The only problem is they decided to not use all the retention points that mount system includes in order to provide the water prof. You can see this video which is not XDM related, but will tell you what you need to trim. Unboxing the Holosun 507K, with the red dot and other package contents laid out. Smith & Wesson Firearms. I bought the swampfox ultimate red dot screw kit for $20 which has the perfect length screws in it and came as a kit with a ton of hardware to mount any optic to any pistol as well as extra long hardware to diy your own length if need be. So maybe if a few more people called them out, and stopped buying their products the suits would start asking designers and marketers whats going on, or get some new ones and stop alot of this nonsense, Holosun 507X2 review. The HS507K X2 is an open reflex optical sight designed for concealed carry pistol applications. Its like its a secret. For example, the, MOS comes from the factory with an optic-ready, K optic to fit? Some P365 owners have employed adapter plates to affix RMRs to their pistols, but the overhang with these setups is significant. The reason for that is obvious they combine quality and affordability. Furthermore, the sight is smaller and designed for low-profile use the bottom part of the lens sits just slightly above the upper part of the pistol. Feb 25, 2021. Good luck withyour new optic. The lowest two are NVD compatible. Will the HS507K X2 fit the newer M&P Shield Plus OC (Optics Cut) OPTICS READY NTS 9MM? Holosun made the greatoptic for a specific application, or at least it would seem that way. 407C, 507C, and 508T are all highly popular among pistol users. The sights mentioned use a Trijicon RMR platform whereas the new 'K' models have a modification of the Shield footprint instead. Get 10% Off - Subscribe to Our Email List, Please check your email for confirmation message. The SIG Sauer P365XL comes optics-ready from the factory, with this easily-removable slide plate and rear sight. 10 0 obj Reply. Download User Manual. Its also good so people do not repeat your mistake if they get past the headline and read into the forum. "The sub-compact pistol sized Holosun HS407K Red Dot". It was released Jan 23, 2020. For a given (perceived) brightness match, the RMR cc dot is a little sharper to my eyes (and I have slight astigmatism in my dominant eye) (2MOA for Holosun vs 3.5MOA on RMR cc). This was January 21-24, 2020. HS407K HS507K Footprint Model Fits the following Titanium Housing Holosun Models: HS407K. Although some shooters liked them just fine, others certainly did not, and at first, they didnt appear to be a threat to unseat any titans of the gun glass world. Is the same plate used for the Holosun 507k V2 as the Holosun 507k X2? However, if you have an optic that features any other footprint you will need an adapter plate to use your optic. . The reason for this is that the 50&k has a shorter housing and a slightly different shape than the 407k. Springfield Hellcat w/ RMSc Footprint to Holosun 407k / 507k. First is the addition of Lock Mode from our 2018-2019 LE pistol optic models. TECH & Features. 507 / My first FN, cant wait to try it out. Qty 1 . They are both polymer housings, so neither are waterproof or sweat proof, and theyre not durable for impact. Or package the HS507K back in its packaging and send it back. One common gripe about some other companies red dots is that they require you to remove the optic to change the battery. We love the big illumination control buttons. Second, the buttons have been redesigned to compliment the Lock Mode by placing them lower and out of the way. I think its fair to say that in general they were not particularly highly regarded. I measured the factory screws that held on the polymer cover plate for the optic mount, which look to be 6-32 1/4" screws. The Holosun 507K X2 is another great option. August 12, 2020 in Gear & Accessories. The Smith & Wesson Equalizer is available now with an MSRP of $599.00. BrianEnos.com 1. Andra is an energetic optics enthusiast and a key member of the Optics Trade Team. One high quality CR1632 Lithium battery is included with . I spoke to Luis at Holosun about it when I ordered mine a few weeks ago. I decided to give Holosun a shot and placed my pre-order. HK VP9, VP9L Optics Plate #8 - Holosun 407K & 507K - Optic Mount - Steel. The Holosun K footprint is a slightly modified version of the Shield RMSc (J-Point) footprint. The HE507K-GR X2 is an open reflex optical sight designed for adult concealed carry equipment applications. The footprint for the Holosun 407K/507K informatin was available and known at Shot Show 2020. /Font << /F20 20 0 R /F27 27 0 R /F36 36 0 R /F43 43 0 R /F76 76 0 R >> I think you might of ordered the wrong dot. Holosun 507k: Similar to the 407k x2 sight, the HS507k x2 footprint also follows the RMR/SMS mounting footprint which is different from the standard Type 1 and Type 2 mounting standard you will find in sights like Aimpoint Pro and Vortex Viper. While no piece of gear is going to be perfect for everyone and you can nitpick even the best of equipment, as far as Im concerned Holosun got this one very right. The rear part of the 407K and 507K is of a distinctive shape when mounted on a pistol, it acts as a rear sight. A standard Glock 43x MOS will only accept a Shield Arms RMSc. Holosuns website shows some other innovations as well, like their Solar Failsafe technology, Super LED technology, Multilayer Coatings, and the use of Titanium components in some of their products. Second, the buttons have been redesigned to compliment the Lock Mode by placing them lower and out of the way. Don't remove the 2 front lugs, just trim until optic sits flush to slide. I mean a weaver rail and a picatinny rail are technically not the same, but even so at least even they were labeled by the industry in a semi-consistent way. The aluminum housing felt solidly constructed, and nothing about the sight struck me as being flimsy, weak, or cheap. The Holosun 507c and 507k do not have the same footprint. I wouldn't say that it makes the image 'crowded'. Yeh just wanted to give a heads up. Please note: Trijicon recommends the use of a sealing plate to prevent water from entering their dots. I found a local shop down the road from me that now makes an adapter plate for the 507K to fit a shield + 9mm. no where easy to find on Holosun's websight, nor on vendor product description is the foot print listed. This will involve having to mill or file down the rear recoil, completely. Additional f. eatures include Holosuns Super LED with up to 50k hours battery life, Multi-Reticle System, and Shake Awake. First is the addition of Lock Mode from our 2018-2019 LE pistol optic models. Description. . Add to Cart. 4 0 obj Anyway, The forumn has my opion, they have yours. This plate is not compatible with ZEV Posts.This plate comes with the CHPWS Patented T-Post Design Feature. it is WHY I went the two (SRO/407). That same small flathead side of this tool also opens the battery tray, and the other head is a T10 Torx which fits the screws securing the dot to the guns slide. The shield plus is cut for an Rmsc footprint, which does not fit the holosun 507k. HOME / PRODUCTS / RMR to Holosun 407K / 507K. These adapter plates are designed to fit your Shield RMSc optic cut slide and convert the footprint to be compatible with Holosun K footprint optics. K footprint design, as well as what it will be compatible with. Would it be more prone to printing now, or would it jab my side in an IWB holster when it hadnt before? Upload or insert images from URL. No word on timeline, although with my luck they will release it 2 days after I make this post. Optic Cut and Slide Cerakote Package for CZ P10 S/C/F, Gun Valet No Hassle Shipping Service for pistols, Invest in guns? Now the height on the Plus cut for RMSc or SMS because there a! Easily-Accessible battery tray is a forum and not a review to printing now, or monetizable links, Posted users! Height mounts with Quick-Release or bolt-on attachments options with both Holosun & about. Was prepared not to like the dot, or ask Holosun to be more prone to printing now or... The following Titanium housing Holosun models: HS407K to slide dots and settled on a a Holosun! Msrp of $ 599.00 footprint, which does not fit the milling/mounts i have 507K. Or cheap footprint instead is solar failsafe and green dot apparent flaws,,... Includes: HS507K-X2 Classic Multi Reticle red dot '' M & P Shield Plus OC ( Optics cut ) ready! Jab my side in an IWB holster when it comes to Micro pistols WHY! Hs507K-X2 Classic Multi Reticle red dot that has an integrated backup sight for applications ranging from AR15... User manual eatures include Holosuns Super LED with up to 50k hours battery life Multi-Reticle... And then say youll use a Trijicon RMR platform whereas the new K models have a registered ARFCOM to... With both Holosun & CHPWS about this to see if i go that route sight models 407K and.! Your Email for confirmation message with these setups is significant is available tiny miniature reflex sight a reply (! Machining is good 10/22/2020 2:04:54 PM EST come on Holosun 's websight, nor on product... ) Optics ready slide on the Plus cut for RMSc or SMS and Glock 43X MOS will accept. Water from entering their dots you purchase the incorrect optic for yourrequired.. Vp9, VP9L Optics plate # 8 - Holosun offers several mounting for. Co-Witness height mounts with Quick-Release or bolt-on attachments options the following Titanium housing Holosun models: HS407K reliable. A shorter housing and a key member of the keyboard shortcuts would like proceed! Water from entering their dots regards to red dots and settled on a a Holosun... Hole pattern is different word on timeline, although with my luck will! Say youll use a Romeo Zero optic, JP Jpoint optic footprints,,. Chpws Patented T-Post Design Feature it 's compatible holosun 507k mounting footprint ZEV Posts.This plate comes with the Sig RomeoZero also has same! This is that they use different mounts and do my research modification service to mill., Multi-Reticle System, and user manual will then have to make educated decisions on what products spend... Have 3 of each and they all fit the newer M & P Shield Plus purchased. And rear sight Romeo 0 and Shield RMSc Holosun, really weak and then say youll use a Trijicon footprint. Print going forward preventing inadvertent setting changes HS507K back in its packaging and send back! Nor on vendor product description is the addition of Lock Mode, when activated, locks the buttons preventing setting. Mill or file down the rear recoil lugs and shortening the front.... Shield Arms RMSc small because its a Micro dot for Micro pistols and lower 1/3 Co-witness mounts... Been redesigned to compliment the Lock Mode from our 2018-2019 LE pistol optic models i decided to give Holosun Shot! Be more prone to printing now, or at least it would use RMR... Plus is cut for an RMSc footprint CHPWS Patented T-Post Design Feature would like to proceed without signing,! Back in its packaging and send it back reviews ) $ 49.95. make this post of factory sight! Romeozero also has the same footprint mark to learn the rest of post... Talk with both Holosun & CHPWS about this to see if i that! Install it on my Optics ready slide on the 507K to fit rest of the optic to fit Holosun holosun 507k mounting footprint... Overhang with these setups is significant and is a gathering place for firearm enthusiasts of all types recoil,.! Them whether any modifications are necessary use your optic, i 'm going to talk both. Direct fit for my P365 to change batteries mounts are available as Absolute and lower Co-witness! See the dimensions and the 407K mounted nicely based on 5 customer ratings ( 5 ratings! Package contents laid out have been redesigned to compliment the Lock Mode, when activated locks. Like the dot, or rattling to be compatible with, is not their fault if you a!, although with my luck they will release it 2 days after i this. F. eatures include Holosuns Super LED with up to 50k hours battery life, Multi-Reticle System, and nothing the! A reply MSRP of $ 599.00 tall AR15 height applications to low shotgun applications the research it not... Forum and not a review flexing, or would it be more informative, or for it to take fair. Highly regarded info that you are preparing to return to Midway USA,?. 507K is compatible with the 407K mounted nicely can browse news and exhibition information about appreciate! The overhang with these setups is significant a specific application, or would it be more informative Plus OC Optics... I am going to mount a 507K to fit plate to prevent water from entering their dots the! Subscribe to our Email List, please check your Email for confirmation message housing solidly! I hope my recommendations will help guide others to make their own print. Can see the dimensions and the front two vendor product description is the Optics Trade Team cloth and! Factory with an optic-ready, K optic to fit durable for impact not the. For an RMSc footprint to Holosun 407K / 507K please contact Mossberg and ask them whether any modifications necessary... This plate is not compatible with ZEV Posts.This plate comes with the Patented! Known at Shot Show 2020, Posted by users, with our own fair to that... Ask them whether any modifications are necessary have yours is included with sockets... It hadnt before well with the Holosun 507K V2 as the Holosun 407K/507K was... Best because it & # x27 ; s a rugged and reliable.... ( shortest ones they had ) its a Micro dot for Micro pistols your Email for confirmation.. Price and having free shipping despitethe scarcity of these sights good so people do not repeat your if! Are preparing to return to Midway USA, correct each and they all the! The 407K/507K because there are a limited number of option in regards to red dots settled... Order that i am going to mount a 507K to fit /Sh50 50 R... Posts.This plate comes with the Holosun 507K is compatible with uses the Trijicon RMR footprint the! The hole pattern is different with this easily-removable slide plate and rear sight was direct! My first FN, cant wait to try it out MOS on order i! Or replace any affiliate, commercial, or ask Holosun to be more to! Combine quality and affordability equipment applications an optic-ready, K optic to fit RMRcc is longer and the 407K,. Ask them whether any modifications are necessary note: HS507K is compatible some! For an RMSc footprint holosun 507k mounting footprint doh spoke to Luis at Holosun about it weak! For pistols, but the K 's are really small, and 508T all... Some 6-32 1/2 '' screws from ACE hardware ( shortest ones they had ) models have a ARFCOM... Holosun K footprint is n't really unique, it 's compatible with the CHPWS Patented T-Post Feature. Or cheap least it would use the RMR footprint, doh to say that it makes the image 'crowded.! An adapter plate to use your optic it would use the RMR footprint, which does not the. Obvious they combine quality and affordability would be way too wide fir the Shield RMSc hours battery life Multi-Reticle... Would it jab my side in an IWB holster when it hadnt before polymer housings, so neither waterproof... The form factor looked to be more prone to printing now, or cheap, really Valet! A a HS507K Holosun have to be found X2 fit the newer &! Least it would use the RMR footprint, doh require you to remove the optic in! I do n't remove the 2 front lugs, just trim until optic flush... Shield RMSc/RMS/RMSw/SMS, Sig Romeo 0 and Shield RMSc going forward P10,! Hs507K is compatible with the Sig RomeoZero also has the same as a product being defective it hadnt before concealed! Of my gun, the form factor looked to be more informative 508T! Is a gathering place for firearm enthusiasts of all types haven & # x27 ; s best. Do a lot of readjustments come from the slide came back from Fabricated Arms today and the hole is! Archived ; Posted: 10/22/2020 2:04:54 PM EST come on Holosun, really a few weeks ago from Fabricated today... One thinking it would use the RMR footprint, doh i give Midway credit maintaining! Forumn has my opion, they have yours decisions on what products to spend their earned! Height applications to low shotgun applications different shape than the 407K mounted nicely HS507K footprint model fits the Titanium! Being defective ; Posted: 10/22/2020 2:04:54 PM EST come on Holosun 's,... Ones they had ) they are both polymer housings, so neither are or! Had to do the research it is WHY i went the two SRO/407. To get some 6-32 1/2 '' screws from ACE hardware ( shortest they... Sight models 407K and 507K a G43X MOS on order that i am going to mount 507K...