So then if the barrel is good like im told by the people who have inspected it in person then the barrel would have been changed out at higher up and not at company or battalion level. Im learning something new with the info you guys are giving. Now was the Navy to the same specs. as the Army when it came ot all that? Gene said he was in the Navy and stamped barrels just like this one aboard ship.

On current note:
Being a Company armorer in 2008 we had a civi team come in and change barrels in my arms room on a few M4's but alot of 16A4's were changed up cleaned up by them.