I was refering to the barrel, not the entire rifle.
Ohhhhhh haha sorry for the mix up, I thought you meant the entire rifle. I will shortly have another build to work on beside this one, so will definitely consider ATRS for my next barrel!
I was refering to the barrel, not the entire rifle.
May be stating the obvious but you will need a pistol length gas tube. ATRS recommended a Full Auto version BCG when I built mine as it has a little bit more mass for cycling. My BCG is from Brownells and it works fine. I'm running a carbine buffer and have had no problems at all. No FTE or FTF in close to 300 rounds so far.
Either commercial or milspec buffer tube will due. They don't affect function.
I'd be interested in an M4 profile or LW if less than $350.