Subsonic 77 grain OTM, suppressed.

Test of Atomic brand's 77 grain OTM, in a suppressed 16” gas-piston AR, using an AAC 762-SDN-6 suppressor. Note that the subsonic round didn’t generate enough recoil to overcome the buffer spring, and the bolt had to be manually cycled for each round.....and that was with a light weight polymer buffer and spring installed. On the upside, the round was very accurate, although the fall of shot was several inches low at 50 yards compared to Lake City M855 or M193 ball.