450Bushmaster.net

Hey guys can anyone tell me for sure what size gas block Franklin Armory is using on the 450 pistol barrels? My barrel will be here later today and Im really hoping it's a 750 block but I'm not sure. Want to get this thing together today. Thanks

750 on mine.

An 11.5" pistol build is so tempting right now. I've got an 11.5" 6.8 and it's a hoot, I can only imagine the amount of fun involved with an 11.5" .450...