EVERYTHING ABOUT COLT 16 INCH UPPER

Notice:  The Colt 6940 relatives of rifles are proprietary built, with few user serviceable parts.  Particular resources are necessary to remove the barrel nut and barrel.  The gas program is exclusive rather than made to get replaced with mil-spec parts.  Truthfully, I would not shoot one.  Time to maneuver on to a brand new rifle.  Get an