A SECRET WEAPON FOR COLT 6940 BARREL NUT WRENCH

the 6940 piston rilfe was basically a dud.  In my opinion, It's not at all well worth fixing.  A few blew a keep extensive open while in the receiver.  It was a good suggestion, that was not very well analyzed, and never ever took off.Worn out rings. Tried out Colt customer support. They are saying it can be out on the one particular year warran