The gas port diameter in the barrel is gonna be good to go - It's a Ballistic Advantage barrel. The recoil system is a little weak, with a 3.8oz shorty buffer, a spring that is barely up to the task, and measure the internal depth of your receiver extension (this is all advice based on the Carbine recoil system for a collapsible stock setup). When Aero first started making these receiver extensions, then had an internal depth of 7.100", when it should have been 7.000". I had some freakish operational issues with one of them, until I found that out. With a weak(er) recoil system, the rifle will recoil harder, making it seem like it's over-gassed - when it's not over-gassed.