SIG 516 SBR with ARC fire selector.
This is my 2nd gun with a FRS, I have a Atrius in a DD M4. Figured I would see how the ARC fire is.
Rifle is a gen 2(I believe) 516 10.5 barrel gun. I needed to replace the bolt carrier because the one that came with it was a semi auto. I replaced it with the LWRCi carrier that the SIG one was based on. I put in a H2 buffer as well. This was a quick range trip before I had to go to work and I didn't even think about taking a video until my last box of 20.
I still might play around with the buffers and possibly springs a little bit. The suppressor setting with the can worked great in semi-auto, (like usual) however it gave me issues when running it in super semi. If I had to guess, I'd say it's probably because the carrier is coming back less forcefully and has a harder time resetting the trigger. Still need to play with it a bit more but that's first thoughts. I'd like to see if I can rectify that. On normal setting with the can, (filmed) works great.
Without the can, shoots a lot slower in the normal gas setting, almost like my DD 14.5" with H3 rate of fire, which I think is a tad to slow and I prefer the H2 buffer in that. I meant to try it in the "adverse" setting, but I forgot. I'll try it next time. Optic is an aimpoint comp m3, light is a streamlight HL-X, blue force gear sling, silencerco 36m can. Overall, it's a pretty good shooter. Just figured I'd share my experience.