Works flawless - Faxon Firearms 5.56/300BLK M16 Bolt Carrier Group

Shoot over 500 rounds of pmc x tac 5.56 out of a Daniel defense 12.5 upper. No issues ran flawless no malfunctions. I used wilson combat gun lube which made it run smooth. I tried it on a different upper and no issues aswell. The one CON is the staking on the gas keys needs to be a little more improved. Other then that ot worked.