I get this question fairly often after I post photos of the Gemtech 5.56 Suppressed Bolt Carrier, "how does it run?"
My answer is always something to the tune of "its fucking awesome, just buy one." Seriously, even though I recently got this I already put a few hundred rounds through it and I know guys who have put thousands of rounds through their's, suppressed. No issues. It is a game changer at its core for short suppressed rifles.