Adjustable Gas FM-15: Early Look and Shots

FM sent me this upper to try with my accessories (key-mo brakes and Silencerco hybrid 46) to see what I thought of it and try out a multiple position gas block. In this video I go over what is great about their implementation and what may need some work. While I took delivery of this FM15 upper from them, I share all issues encountered to remain fair to all viewers.