I've heard good things about the piston-driven design. Similar to HK's 416. Apparently all the carbon and gas is expelled OUTSIDE the chamber - what a concept! Why did it take so long for someone to realize that it is probably better to NOT direct a…
so, this reminds me. has anyone here ever fired a bushmaster acr (formerly known as the "masada")? it's a piston-driven ar, supposed to be the future of military ar's...