Nice and accurate barrel. - Tactical Kinetics Sig Sauer P320 Full Size Threaded Barrel

I installed on my Sig M17. Yes, you have to remove the LCI off the pistol and it fits perfectly. One of the down sides of the LCI is the debris thrown on the optics face. This plugs that up and keeps your optics cleaner. Fits perfectly and threaded for 1/2 x 28 which is the common suppressor thread pitch. Didn’t come with a thread protector. Shot very accurate groups. I’m very happy with it.