We are starting to see more and more accessories for the SIG P320 series of pistols like this RMR Mount with Dovetail Adapter Plate from Springer Precision.
It’s a one-piece aluminum sight base for mounting a Trijicon RMR to the Sig Sauer P320 M17 pistol. This version includes a rear dovetail so you can co-witness with SIGLITE Supressor Night Sights. Mount is designed and tested around the use of the SIGLITE Supressor Night Sights but does not include them.
Cool, but it looks like Sig maybe transitioning to the Screw from the top style optics cut.
Like the ones on their LE P320 Pro Series, and their new fugly P320 Pro-Cut slides. (that no one is currently making plates for)
https://soldiersystems.net/2019/07/01/sig-sauer-announces-p320-pro-cut-slide-assembly-available-exclusively-at-sig-sauer-web-store/
I actually purchased this last week for my M17 to shoot suppressed with an RMR. It’s not as straightforward as I thought.
So… First thing is I purchased the siglite night sights and they don’t co-witness because the sight base is a few millimeters higher than the front of the slide, so a taller suppressor height front sight is needed. I have yet to get another front sight to correct this. Also, while looking for threaded barrels for the M17 I only found the silencerco full length threaded barrel for the P320. The only issue is that it does not have the LCI cut like the M17 barrel does. This causes gas and debris the gum up the RMR since it’s just an open hole and the gun does not cycle with a can on it since it’s loosing all that back pressure.
Luckily, Sig will sell you M17 LCI’s for $18 shipped. My plan is to file the second one down to fit with a standard P320 Barrel so it will cycle once it’s suppressed.
In regards to the mount, it’s actually really nice fit perfect I just wished that it was a little lower profile to not have to have get an extremely large front sight to co-witness.
So you’re unfamiliar with how handguns function? It can’t “lose back pressure” because of a loaded chamber indicator. You realize that the LCI is at the rim of the cartridge and that when you shoot the brass expands creating a seal? You either have barrel issues, underloaded ammo, or you are using a silencer with an unlubricated piston resulting in malfunctions.
Well it’s not the ammo it works in every other suppressed Striker fired pistol I own. It’s not suppressor for the same reason and the barrel is brand new from silencerco so I doubt there’s an issue with it. That being said the only difference with this pistol opposed from the others I suppress was a hole at the top of the barrel and a groove in the slide where the LCI fit. Either way ordered another one and filed it down to fit with the barrel and oddly it fixed the issue….
It’s great to see the growing aftermarket for the Sig p320 and p365. Sig’s striker fired pistols have really gotten popular in the five years the p320 has been around, and the year and a half for the p365.
I’d also like to see some LE agencies switch from Glock to the HK vp9-B, the CZ p10, or the Beretta APX.