Sig p365 x macro holosun 507k

Holosun 507K X2 - Best Overall · Magnification: 1X · Reticle: 2 MOA dot, 32 MOA ring, or combined · Turret Value: 1 MOA / Click · Window Size: 0.58" X 0.77" ...

Sig p365 x macro holosun 507k. 31 posts · Joined 2015. #1 · Sep 1, 2022. Fellow Sig connoisseurs, I was at the range the other day and plinking with the p365X with the Holosun 507k mounted using red lock tight. At 7 yards I was hitting 4” left. It was hot out and the gun was already warmed up from trying to hit steel from 100. I was way off - thus the 7.

Jan 26, 2021 · One is 6-32 and the other slightly larger 8-32 they are both 7/16 long and have T-10 Torx head. Amazon has them in shorter lengths here is the link. MonsterBolts - #6-32 x 3/8" Flat Head Socket Cap Screws, ASTM F8356, Alloy Steel, Black Oxide, 20 Pack: Amazon.com: Industrial & Scientific. Reply.

I've seen multiple on the Internet that the factory P365 sights are easily usable through the window of the Sig Romeo Zero, Holosun 507k, or Shield RMSc red dot. But as far as I can tell, that's mostly untrue! See pictures of my 365XL below. If I line up the factory front sight with the "backup rear sight notch" on the HS507k, the very top of ...Sig Sauer 365X Macro Holosun 507K Installation. Red dot sights are proving to be faster, easier and safer then traditional front and rear sights. Here I share my thoughts on the Holosun...For quick shots in close, the circle reticle on the Holosun 507k is an awesome choice and the dot in the middle is fine enough for long accurate shots. ... Sig released the P365 X-Macro. The X-Macro gives similar capability to what I’ve built, though not quite as refined.Yes. Precisely. If you compare the screws you'll see the EPS Carry ones have a weird shoulder built into them. That shoulder runs into the recoil lugs on the slide before the screws tighten down all the way. The 407K/507K screws don't have that shoulder and they work perfectly. 4 more replies.Easily mount Holosun 407/507K and 20+ of the most popular optics to your pistol of choice with a precision-machined dovetail adapter plate made from lightweight 7075 aircraft aluminum. ... Sig Sauer P365X/XL/X-Macro/380 Sig Sauer P320 ... Sig Sauer P365 Micro Red Dot Adapter Mount Plate - OuterImpact.

Why people love Holosun 507K - The 507K micro red dot sight is the best Sig P365 red dot sight. It mounts directly on the P365XL model by replacing the rear sight with compatible mounting plates, screws included. Motion Sensor Activated - Shake Awake technology is a great feature that activates the reticle upon movement & deactivates it to save ...Both an eps and eps carry will fit. But the Eps will hang off about 2 mm on each side, where the carry should be flush. ph00ny • 10 mo. ago. I don't know if it's going to be flush with the top of the slide. EPS carry is hair wider than 507k and 507k is slightly wider than top of stock p365xl slide.These are the screws you need to mount the Holosun 407K or 507K to your Smith & Wesson Equalizer, Smith & Wesson M&P 5.7, or Smith & ... Sig P365 TLR7 Sub Flashlight - 69401 - 500 Lumens - Streamlight ... Sig Sauer P365X/XL/X-Macro/380 Sig Sauer P320 ...Hi all, New member, though I've read a lot of posts here over the years. I've got a couple of Sig's, but the reason for my post ... I have a P365 and I purchased a Sig P365X slide and a Holosun 507K optic. I had no issues with the ... P320 X-5, M17, & M18 Pistols P365. Top Contributors this Month View All Harry_Gorilla 928 Replies.Below are the best Holosun Red & Green dot optics for your Sig Sauer P365X, 365XL, 365X-Macro, or P365-380. These will fit directly on your slide with no modification. Here is an install video on the P322 but the process would be similar for your pistol.. If you have any questions reach out to us or check out our S.In today's video we take a look at the new Sig P365 X Macro along with the Holosun EPS Carry and Vertx SOCP Fanny Pack. Let us know what you all think about...Sig Sauer custom slide milling and optic cuts to increase the functionality of your pistol. ... Sig P365 Holosun EPS / EPS Carry. $125.00. If holster wear/durability is a concern then we highly recommend going with our Black Nitride as Cerakote is a wearable item.

Expert Answer. A. Answered by Ethan , Gear Expert, from IL, United States, on August 15, 2022. Yes, the P365X Macro uses the same optic footprint as the 365XL, 365X, and 365 series of pistols, making this Holosun HE507K-GR X2 Green Dot Reflex Sight a direct fit to the optic cut. 31 of 34 found the following answer helpful.1. Holosun HS507K-X2 (My #1 Pick!) As I said earlier, I think the Holosun 507K is the best red dot for the Sig P365 and there are several reasons why. First of all, the 507K is an extremely durable and reliable little optic. It has a sight housing that’s made from 7075-T6 aluminum, and the square top design makes it fairly impact-resistant as ...Thanks for all the help, guys. "$299 MSRP for a P365x slide, no barrel or RSA. Slide will be factory cut for the standard RMSc footprint (Holosun K series, Romeo Zero, Romeo Zero Elite, Shield, etc.). Install will be a breeze. No plate required. Will come with Sig XRAY sights and a sight plate.So I finally got a break in the weather or so I thought, and go out to test the Sig X-Macro. We did however have our first malfunction. Please like, share, ...

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Sig P365 X Macro with Holosun 507K Range Update. The Sig Sauer p365x Macro replaces the Glock 43X. Join Jimmy Gears as he gives an update on the Sig …This is the one that everyone’s talking about and trying to get their hands on. 17rd, comp’d P365 with Holosun 507k in green. $1100 shippedHolosun sights also frequently include options for night vision compatibility and multiple reticle choices, Skip to content. Enter to Win a $1000 Gift Card! Contact Us All Optics; ... Holosun 4 Screws for the 407K/507K Sight | Fits the Smith & Wesson Equalizer & M&P 5.7 Sale price $6.99 Regular price $9.99. Save 30%. In stock Shop Now. Back In ...Holosun 507K-GR. Link Posted: 1/28/2023 7:25 ...

The Holosun SCS MOS Solar Charging Sight is not compatible with the P365 X Macro. It is designed to fit the Glock MOS cut only. The P365 X Macro will fit optics with the Shield RMSc footprint like the Sig Romeo Zero Elite, Holosun 407K/507K, and more.Even though the screws sit a hair deeper with the EPS they still work great, they’re known high-strength and good quality. Part number 94414A714. Agreed that 10mm long is the correct length for 407k/507k direct-mounted to P365 (X/XL/X-Macro) optic-ready slides. For EPS Carry, I went with 8mm ( 94414A713) screws which still work for 407k/507k. 3.Browse videos of Holosun products. News & Events. ... 407/507K Adapter for RMR $ 47.05. Learn More. 407/507K Adapter for MOS $ 47.05. Learn More. 509 Adapter for MOSThe Holosun HS507K-X2 is a great budget alternative to the Trijicon RMRcc. It offers similar features and performance at a much lower price. Highly Durable – The HS507K-X2 is built with the same ruggedness and durability as the Trijicon RMRcc.. Lightweight – At only 1 oz, this sight is lightweight and perfect for use on a lightweight …Feb 17, 2023 · SIG/Wilson Combat P365X with Action Tune. Available Calibers: 9mm Magazine Capacity: 12 Rounds Barrel Length: 3.1” Overall Length: 6” Sight Radius: 4.9” Height: 4.8” Width: 1.1” Weight Empty: 19 oz Weight Loaded: 24.4 oz SPECIFICATIONS: Wilson Combat P365XL module Wilson Combat X-TAC P365 slide with machine bevels DLC finish on slide X-TAC pattern front and rear cocking serrations ... Oct 11, 2022 · 29 posts · Joined 2022 #1 · Oct 11, 2022 Hi Folks, I’m picking up my first Sig tonight and I wanted to get some advice on which Holosun optic to consider? I’ve heard the 507K mentioned a lot. Appreciate your advice and looking forward to being part of this community. Reply Save 1 - 14 of 14 Posts Rich Jenkins 2693 posts · Joined 2020 Red is $260, green is $290 both with code TY10. I've seen them both for about 20-30 dollars cheaper, if you're willing to wait. I got my on Amazon, but make sure it's directly from the Holosun store, not handled by Amazon or another 3rd party. Definitely will checkout Amazon or may wait for all the holiday deals coming up, I definitely want to ...Red is $260, green is $290 both with code TY10. I've seen them both for about 20-30 dollars cheaper, if you're willing to wait. I got my on Amazon, but make sure it's directly from the Holosun store, not handled by Amazon or another 3rd party. Definitely will checkout Amazon or may wait for all the holiday deals coming up, I definitely want to ...Holosun 507K vs EPS carry installed on P365x Macro. That version do the auto adjusting brightness? I've been waiting to get the one that does the auto brightness adjustment. That is my biggest gripe on my 507K today is the brightness that works indoors and the brightness that work outdoors for me are not close to the same, and I don't like ...

Machining services and slide work for the Sig P320 and P365 handguns. Showing 1–15 of 18 ... P365 Optic Cover Plate for Romeo Zero/ Holosun 407K 507K/ Shield RMSc $ 40. 00 Add to cart; P365 ... $ 135. 00 Add to cart; P365 SAS Optic Cut: Romeo Zero / Holosun 407k/507k / Shield RMSC $ 135. 00 Add to cart; P365 X MACRO V1 Milling Package $ …

The P365-XMACRO is a striker-fired, 9mm, polymer frame pistol featuring the all-new Macro-Compact Grip Module with a standard 1913 accessory rail, an integrally compensated P365 XSERIES optics ...Today I show to install the Holosun 507k x2 on the new Sig 365X Macro.Lexie__M · #2 · Aug 28, 2022. Chiefneon said: I ordered a Holosun EPS and tried to mount it on my P365 X Macro. I was very disappointed when I found that the screws Holosun provided were the wrong ones. The threads on the screws were wrong. Take it to gun shop, their gun smith will attach your red dot in a few minutes.The Holosun 507K is a compact and lightweight red dot sight that is perfect for the Sig P365 X-Macro. It has a 2 MOA dot reticle and features Shake Awake technology, which will automatically turn on the optic when it senses movement and turn it off when it is still.Features. With an innovative new magazine design, the P365-XMACRO packs a full-size 17+1 round capacity into the thin, iconic profile of the P365. The P365-XMACRO is also more shootable, with an integrated compensator that reduces muzzle flip and makes follow-up shots faster and more accurate. And with its slim, 1” wide design, the P365 ...Welcome to my review of the Best Red Dot For Sig P365 in 2023! 1. ... Leupold DeltaPoint Pro 3. Holosun 507K X2 - Highly Rated. Welcome to my review of the Best Red Dot For Sig P365 in 2023! 1. Trijicon RMR - My Top Pick 2. Leupold DeltaPoint Pro 3. Holosun 507K X2 - Highly Rated.These flame colorized Titanium screws are replacement screws to mount your 507K to your G43/43X/48 Slide. The package includes: 2 Screws - 6Al4V Titanium. T8 - Torx Head. #6-32. These screws are not for the AOS plates. These screws are for mounting the 507k to an Agency Arms milled G43/43X/48. WE CANNOT GUARANTEE FITMENT OF THESE SCREWS TO ANY ...The Holosun 507K is a compact and lightweight red dot sight that is perfect for the Sig P365 X-Macro. It has a 2 MOA dot reticle and features Shake Awake technology, which will automatically turn on the optic when it senses movement and turn it off when it is still.Just picked up the sig p365 X macro. ... Holosun 407k/507k are proven winners for this platform. *Not sure if the optic footprint has changed with the Macro revision ... 507k is a 2moa center dot with the circle that can be selected. 407k …

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The P365-XMACRO is a striker-fired, 9mm, polymer frame pistol featuring the all-new Macro-Compact Grip Module with a standard 1913 accessory rail, an integrally compensated P365 XSERIES optics ...Sep 18, 2022 · In today's video we take a look at the new Sig P365 X Macro along with the Holosun EPS Carry and Vertx SOCP Fanny Pack. Let us know what you all think about... Which Holosun is best for P365XL. Hello all, first time poster, new to the forum. Recently joined the P365XL family, and I want to get a Holosun for it. There are a few varieties of the 507k. The two I think would be best are the Holosun HE507K-X2 ( $319) or the Holosun HS507K-X2 ($289).Threaded 6-32 tpi and uses the factory screws supplied with your Holosun 407k or 507k. The Holosun 507k Cut Slide for Sig P365 also comes with a factory front and rear sight dovetails. Machined from heat-treated & hardened 17-4 stainless steel billet; Hard, wear-resistant matte black Nitride finish; Internal dimensions identical to factory slideThe SIG P365 is easily the most influential firearm built in the last decade. This micro-compact 9mm found a way to shove double-stack capacity into a gun the size of a single …86 posts · Joined 2019. #1 · Aug 28, 2022. I ordered a Holosun EPS and tried to mount it on my P365 X Macro. I was very disappointed when I found that the screws Holosun provided were the wrong ones. The threads on the screws were wrong. I have three other Holosun 507K optics that I mounted on other P365’s and never had this problems with ...Threaded 6-32 tpi and uses the factory screws supplied with your Holosun 407k or 507k. The Holosun 507k Cut Slide for Sig P365 also comes with a factory front and rear sight dovetails. Machined from heat-treated & hardened 17-4 stainless steel billet; Hard, wear-resistant matte black Nitride finish; Internal dimensions identical to factory slideExpert Answer. A. Answered by Ethan , Gear Expert, from IL, United States, on August 29, 2022. Yes, the Holosun Sub-compact HS507K-X2 Red Dot Sight will fit directly to the optic cut found on your P365 X Macro. 6 of 6 …Torx T-handle T-10 driver (to start Holosun screws) Wheeler FAT Wrench with a Wiha T10 insert set at 15 in lbs (final torque of Holosun screws) I used the smaller of the two Holosun screws that came in the package. I "believe" these are M3-0.5mm pitch, approx 1/2". I opted to leave the dry blue threadlocker on the holosun screws and installed ... ….

SIG P365 sight change and Holosun HS507K X2 red dot installhttps://www.technaclip.comhttps://www.sigsauer.com/xray3-sight-set-day-night-super-tall.htmlhttps:...507k is a 2moa center dot with the circle that can be selected. 407k is available in wither 3 or 6 moa versions. For CCW I prefer the 6moa 407k. For my range/competition I prefer a smaller dot but I have to say that many people that are much better than me are using very large dots on race guns and shooting crazy fast with them so my choice ...For quick shots in close, the circle reticle on the Holosun 507k is an awesome choice and the dot in the middle is fine enough for long accurate shots. ... Sig released the P365 X-Macro. The X-Macro gives similar capability to what I’ve built, though not quite as refined.NOTE: The Grayguns P365 Competition Hybrid Trigger System for the SIG Sauer® P365 is a drop-in, enhanced trigger package with competition sear for your P365 that reduces trigger weight as low as 4 pounds while preserving all mechanical safety values. Includes our hybrid trigger, with built-in over-travel adjustment. The Sig Romeo Zero ( Check Price On Amazon – Over 360 Reviews) So in this Holosun 507k Vs Romeo Zero comparison, we’re going to see how these two little optics stack up to each other in the following 6 categories…. Durability And Toughness. Lens Clarity And Reticle. Size Comparison.Glock 19 CZ Scorpion Rock Stainless Standard CS 45ACP 7RD Springfield Hellcat SIG P365 X Macro Springfield Prodigy 1911 DS 5 Walther PPK. Shooting Supplies. Gun Accessories. ... Holosun 507K X2 $348.22 (Save up to 15%) Price $295.99. In Stock. 1 Review. HS507K-X2. Holosun Technologies. Holosun EPS Carry MRS Green $505.87 …Sep 1, 2022 · 31 posts · Joined 2015. #1 · Sep 1, 2022. Fellow Sig connoisseurs, I was at the range the other day and plinking with the p365X with the Holosun 507k mounted using red lock tight. At 7 yards I was hitting 4” left. It was hot out and the gun was already warmed up from trying to hit steel from 100. I was way off - thus the 7. Comes factory new in box with 2-17rd mags, manul, and lock! With an innovative magazine design the P365-XMACRO packs a full-size 17+1 round capacity into the ... Sig p365 x macro holosun 507k, This is the one that everyone’s talking about and trying to get their hands on. 17rd, comp’d P365 with Holosun 507k in green. $1100 shipped, 5.0 out of 5 stars Advertised to work with the P365 and the Holosun 507, but not the 507K Reviewed in the United States on December 9, 2020 This plate will not work with the Holosun 507K as I found out when I attempted to installed it. The alignment pins are to long. In the list of questions for the plate there is a ..., Threaded 6-32 tpi and uses the factory screws supplied with your Holosun 407k or 507k. The Holosun 507k Cut Slide for Sig P365 also comes with a factory front and rear sight dovetails. Machined from heat-treated & hardened 17-4 stainless steel billet; Hard, wear-resistant matte black Nitride finish; Internal dimensions identical to factory slide, SIG/Wilson Combat P365X with Action Tune. Available Calibers: 9mm Magazine Capacity: 12 Rounds Barrel Length: 3.1” Overall Length: 6” Sight Radius: 4.9” Height: 4.8” Width: 1.1” Weight Empty: 19 oz Weight Loaded: 24.4 oz SPECIFICATIONS: Wilson Combat P365XL module Wilson Combat X-TAC P365 slide with machine bevels DLC finish on slide X-TAC pattern front and rear cocking serrations ..., The Sig Romeo Zero ( Check Price On Amazon – Over 360 Reviews) So in this Holosun 507k Vs Romeo Zero comparison, we’re going to see how these two little optics stack up to each other in the following 6 categories…. Durability And Toughness. Lens Clarity And Reticle. Size Comparison., The P365-XMACRO is a striker-fired, 9mm, polymer frame pistol featuring the all-new Macro-Compact Grip Module with a standard 1913 accessory rail, an integrally compensated P365 XSERIES optics ..., Record them. Next reinstall the 507K and measure the height of the rear notch of the 507K above the slide. Subtract the Sig rear sight height from the 507K height and note the difference. Add that difference to the front sight and that should give you an approximate height for a new front sight to work with the rear notch of the 507K., Read dozens of our . In Stock Now - The Holosun 507K-X2 red dot sight is the perfect companion to your pistol. Hit targets easier than iron sights. The 507K X2 is currently IN STOCK at the BEST PRICE with FREE Shipping & Returns and 5 Star Reviews. Get yours now! , Unfortunately they keep changing the expected dates . I went ahead and bought the 507K . I don't know about the XL slides . My Macro's rear sight lines up perfectly with the 507 notch . I'm not using them anyway will a red dot on . Holosun instruction said 507K Poa Poi was 25 yards . So I raised my dot up just a few clicks ., Sig Sauer, P365 Macro, Striker Fired, Semi-automatic, Polymer Frame Pistol, Sub-Compact, 9MM, 3.1" Barrel, Nitron Finish, Black, XRAY3 Day/Night Sights, Optic Ready, Compensator, 17 Rounds, 2 Magazines. With Holosun 507K optic mounted and laser boresighted. Free shipping to your FFL, or free transfer/local pickup at our shop. Price shown is… , Original screw sizes are listed below. 6-48 Screws - Vortex Viper/Venom, Burris FastFire 2/3, Romeo 1. M4x0.7 Screws - DeltaPoint Pro, Romeo Pro, RMS/RMSc, Sig Romeo ZERO. *Cover plates are custom cut to order and not refundable or returnable unless damaged or incorrect. *If your setup is not listed in the options or you are confused as to what ..., Hi all, New member, though I've read a lot of posts here over the years. I've got a couple of Sig's, but the reason for my post ... I have a P365 and I purchased a Sig P365X slide and a Holosun 507K optic. I had no issues with the ... P320 X-5, M17, & M18 Pistols P365. Top Contributors this Month View All Harry_Gorilla 928 Replies., Comes factory new in box with 2-17rd mags, manul, and lock! With an innovative magazine design the P365-XMACRO packs a full-size 17+1 round capacity into the ..., Sig Sauer P365X/XL/X-Macro/380 ... These are the screws you need to mount the Holosun 407K or 507K to your Smith & Wesson Equalizer, Smith & Wesson M&P 5.7, ... Use these screws to mount the Holosun EPS Carry on your Sig P365 or P322 without using the included EPS Carry shim plate., Torx T-handle T-10 driver (to start Holosun screws) Wheeler FAT Wrench with a Wiha T10 insert set at 15 in lbs (final torque of Holosun screws) I used the smaller of the two Holosun screws that came in the package. I "believe" these are M3-0.5mm pitch, approx 1/2". I opted to leave the dry blue threadlocker on the holosun screws and installed ..., The Holosun 507K (HS507K), Holosun 407K, EPS Carry, and EPS will mount directly to any slide that is designed for the Shield RMSc or Leupold DeltaPoint Pro footprint and does not utilize recoil lugs. Holosun 507K/Holosun 407K/EPS Carry: SIG P365; SIG SAUER P365X; SIG P365XL; SIG P365 X-Macro; S&W Equalizer; Optic-Ready P320s, Below are the best Holosun Red & Green dot optics for your Sig Sauer P365X, 365XL, 365X-Macro, or P365-380. These will fit directly on your slide with no modification. ... Holosun 507K Green X2, 32 MOA Ring & 2 MOA Green Dot, Side Battery - …, , SIG P365 sight change and Holosun HS507K X2 red dot installhttps://www.technaclip.comhttps://www.sigsauer.com/xray3-sight-set-day-night-super-tall.htmlhttps:..., Holosun 507K vs EPS carry installed on P365x Macro. That version do the auto adjusting brightness? I've been waiting to get the one that does the auto brightness adjustment. That is my biggest gripe on my 507K today is the brightness that works indoors and the brightness that work outdoors for me are not close to the same, and I don't like ... , Yes. Precisely. If you compare the screws you'll see the EPS Carry ones have a weird shoulder built into them. That shoulder runs into the recoil lugs on the slide before the screws tighten down all the way. The 407K/507K screws don't have that shoulder and they work perfectly. 4 more replies., TFB TV’s James Reeves silently judges you through the 507K’s multilayer coated glass. Installation was a breeze. In no time at all, I had removed my SIG’s slide, backed out the two plate screws from …, 16 posts · Joined 2022. #16 · Mar 10, 2023. Niv_PDX said: I’ve installed Holosun red dot sights on my P365 X Macro and P365-380. I love the red dot sight with the guns, but am also interested in using the iron sights so I can co-witness. Sadly, the OEM sights are too short and blocked by the red dot sight., I put the holosun 507k on my p365 x macro. so far I like the look. : r/SigSauer • I put the holosun 507k on my p365 x macro. so far I like the look. 104 45 comments smee665 • 1 yr. ago If you want to get rid of that Holosun on the side, get this; https://imgur.com/a/ibzpSRa kiinz0x • 1 yr. ago Thanks for that, i'm gonna look for it., May 11, 2021 · Davidjon_99. 127 posts · Joined 2021. #3 · May 11, 2021. iceman17930 said: I want to mount a Holosun 407K X2 red dot on my P365. Does anyone know if this red dot will fit on the P365X slide with the cutout. Sigs website says it will fit the Romeo Zero, Shield RMS-c, and J-Point red dots. Has anyone tried to mount the Holosun red dot on this ... , Sig Sauer P365X/XL/X-Macro/380 ... These are the screws you need to mount the Holosun 407K or 507K to your Smith & Wesson Equalizer, Smith & Wesson M&P 5.7, ... Use these screws to mount the Holosun EPS Carry on your Sig P365 or P322 without using the included EPS Carry shim plate., Below are the best Holosun Red & Green dot optics for your Sig Sauer P365X, 365XL, 365X-Macro, or P365-380. These will fit directly on your slide with no modification. Here is an install video on the P322 but the process would be similar for your pistol.. If you have any questions reach out to us or check out our S., Browse videos of Holosun products. News & Events. ... 407/507K Adapter for RMR $ 47.05. Learn More. 407/507K Adapter for MOS $ 47.05. Learn More. 509 Adapter for MOS , Expert Answer. A. Answered by Ethan , Gear Expert, from IL, United States, on August 29, 2022. Yes, the Holosun Sub-compact HS507K-X2 Red Dot Sight will fit directly to the optic cut found on your P365 X Macro. 6 of 6 …, Both an eps and eps carry will fit. But the Eps will hang off about 2 mm on each side, where the carry should be flush. ph00ny • 10 mo. ago. I don't know if it's going to be flush with the top of the slide. EPS carry is hair wider than 507k and 507k is slightly wider than top of stock p365xl slide., The HOLOSUN HS 507K-X2 is a micro red dot sight designed specifically for concealed carry on SIG P365 pistols. Its standout features include a long 50,000-hour battery life and Shake Awake technology that auto-shuts the LED to conserve battery., Yes. Precisely. If you compare the screws you'll see the EPS Carry ones have a weird shoulder built into them. That shoulder runs into the recoil lugs on the slide before the screws tighten down all the way. The 407K/507K screws don't have that shoulder and they work perfectly. 4 more replies., Holosun makes the best RMSc pattern micro dots, so any EPS Carry(EPS if you don’t mind the overhang for larger window) or a 407k/507k. Own a few of the Aimpoint Micro footprint SIG ROMEO 4 red dots, but I think their pistol dots are way down my list in terms of what I would buy and carry.