GETTING MY COLT 6721 UPPER FOR SALE TO WORK

Take note:  The Colt 6940 spouse and children of rifles are proprietary designed, with few consumer serviceable parts.  Precise resources are required to eliminate the barrel nut and barrel.  The gas method is unique and not designed to get replaced with mil-spec parts. Exactly what is a revelation is Colt’s newfound dedication on the U.S. ci