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Which Holosun for a FS p320?

This is a discussion on Which Holosun for a FS p320? within the P250, P320, & P320 X-5 Pistols forums, part of the SIG Sauer Pistols category; I'm getting confused from all the offerings and then they have new models too. I would probably get it milled as mines isn't cut at ...


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P250, P320, & P320 X-5 Pistols P250, P320, & P320 X-5 Pistols

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Old 09-14-2020, 08:38 AM   #1
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Which Holosun for a FS p320?

I'm getting confused from all the offerings and then they have new models too.

I would probably get it milled as mines isn't cut at all.

I have a HS507K X2 on backorder, but i guess it'll go on my p365 XL.
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Old 09-14-2020, 08:43 AM   #2
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The 407, 507, or 508 seem to be the go to options from Holosun. Personally, I am holding out for the HE509T which has yet to hit the market yet. The 507K would work on a 320, but it is on the narrow side for the width of the slide.
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Old 09-14-2020, 12:07 PM   #3
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The 407c is what I put on my P320. Robert Burke milled my slide. Flawless job.
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Old 09-14-2020, 01:12 PM   #4
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I'm using a 507C V2 (version 2) on an X5.

The 507 can be configured to have a dot, a circle, or a circle/dot.

I tried the dot and am now trying the circle/dot.
I think I'm picking up the circle/dot faster.
Makes sense to me, there is a lot more there to pick up on.

The 407 is basically a 507 that only has the dot.
So if all you want is the dot there is no reason to pay the extra $80 or whatever.
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Old 09-14-2020, 01:37 PM   #5
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I had a 507C v2 mounted on my X Carry. I loved it. The only reason it's no longer on the pistol is that it requires a plate (or having the slide redrilled) and I didn't want to go down that road. It's a tall optic but would be ok if it weren't for the added height caused by the plate.
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Old 09-14-2020, 02:32 PM   #6
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The 407c (dot only), 407co (circle only), 507c (dual reticles), 508t (titanium dual reticles) in red or green reticles, V1, V2 or the new X2 are all the same footprint of an RMR and will perfectly fit any RMR cut slide. The 407k is the smaller version for sub-compacts with a different footprint.

I have a 507c V2 green on my P320 (because I am still waiting for my 508t GR V2/X2) and itís incredible







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Old 09-15-2020, 09:35 AM   #7
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Thanks a lot for all the feedback and visuals.

I'll wait for the HS507K for my XL first.

I do want to keep a gun with open sights and not red dot all my pistols. 1911 10mm has a vortex venom red dot.

Primary Arms and Osage has the 507C V2 in stock too.
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Old 09-15-2020, 03:40 PM   #8
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Quote:
Originally Posted by miula View Post
The 407c (dot only), 407co (circle only), 507c (dual reticles), 508t (titanium dual reticles) in red or green reticles, V1, V2 or the new X2 are all the same footprint of an RMR and will perfectly fit any RMR cut slide. The 407k is the smaller version for sub-compacts with a different footprint.

I have a 507c V2 green on my P320 (because I am still waiting for my 508t GR V2/X2) and itís incredible







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Love the Green dot!! May have to look that that one


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Old 09-15-2020, 03:54 PM   #9
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Really expected circle dot to have more spacing. I thought it was 65 MOA circle std. with 2-4 MOA Dot


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Old 09-15-2020, 06:44 PM   #10
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Quote:
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Love the Green dot!! May have to look that that one


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The green reticle works better for my particular astigmatism but beware your mileage may vary... some people do better with red reticles...


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Old 09-15-2020, 06:48 PM   #11
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Originally Posted by sstewart View Post
Really expected circle dot to have more spacing. I thought it was 65 MOA circle std. with 2-4 MOA Dot


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There is plenty of space between the 32 MOA ring and the 2 MOA dot, itís just very difficult to catch it in a picture... the reticle is much larger when pressing the gun out to the correct position vs. the camera 1/2Ē away from the optic...


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Old 09-16-2020, 06:30 AM   #12
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Any recs to where to get my slide milled? I'm go for it.
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Old 09-16-2020, 07:59 AM   #13
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i would prefer this setup to a slide drilled for for R1P only
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Old 09-16-2020, 09:05 AM   #14
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Are any P320's drilled for the RMR footprint from the factory?

For a minute there I was regretting not having bought a pre-cut P320 similarly to the P365 XL.
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Old 09-16-2020, 11:01 AM   #15
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Which Holosun for a FS p320?

Both my ZEV Octane and NORSSO Reptile slides came milled for the RMR/Holosun with the proper footprint and recoil bosses.

If you are going to have an OEM SIG slide milled for an RMR it needs to be a solid slide and not precut for the R1 and/or R1P/DPP because there isnít any material left to create the recoil bosses (front posts), etc.

If you have an optic ready OEM SIG slide you would spend less money purchasing an RMR ready slide aftermarket vs. buying a solid OEM SIG slide and having it cut.

That being said, I had Bruce at Primary Machine cut my VP9L-B for the Holosun and black nitride coated; canít say enough good things about the outstanding result.

NORSSO Reptile X-Compact



ZEV Octane X-Compact (my current carry gun)



Milled slide by Primary Machine on the VP9


Last edited by miula; 09-16-2020 at 11:05 AM.
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