I am getting ready to send a 6400 upper into ADCO to have the comp removed and an A2 screwed on. Does anyone know for sure if the barrel is threaded under that brake? I have heard some say they are and other say they are not.
Posted: 2/20/2010 7:38:39 AM EDT
[#1]
Not, I sold my barrel and put on a pinned and welded 14.5. 6400 was a post ban style upper and could not have a threaded muzzle. I wanted the M-4 stamped lower so it was worth it. ADCO can thread it though, not a problem .
