Not gassed properly - TRYBE Defense Match Series AR-15 .300 AAC Blackout Threaded Barrel

if you plan to shoot supers than this barrel is fine, although this barrel with the 1/5 twist rate at 7.5 inches is specifically designed for shooting suppressed. If you are setting up this barrel for suppression and shooting subsonic ammo, you will have to drill out the gas port. the gas port does not allow enough gas through, to cycle a subsonic load. I went through about three different buffers, two springs and two gas blocks to figure this out. I got a #31 drill bit and drilled out the port...voila it works...it's like this whole barrel is designed to shoot suppressed subsonic ammo but someone forgot to update the gas port size... hopefully this review will help someone take less time than it took me to get their build up and running.