A SIMPLE KEY FOR COLT IAR UPPER FOR SALE UNVEILED

Note:  The Colt 6940 relatives of rifles are proprietary made, with couple person serviceable parts.  Unique applications are needed to eliminate the barrel nut and barrel.  The fuel program is unique and never built to be replaced with mil-spec parts. Although staring out an plane window past week, I marveled with the numerous thicknesses of a