I have one and have shot more than 1000rds of tracers and 5000rds of FMJ with no mis fires or jams. I got it wanting to hate it because of what we had to put up with in Viet Nam but this weapon is so relible and Iput sand over it, shot it in the heat and now this winter at 18 below with still no mis fires. These guys in Ky know what a weapon has to go through and has come up to the calling.
My Son has a Bushmaster 5.56 and he hasn't shot the rds that I have but has had 9 mis fires with only 3500 rds.
No I swear by mine, Hope this helps. Sam of Pa.