Colt Government Model AR6522 UPPER RECEIVER GROUP W/ BOLT GROUP - A2, FIXED CARRY HANDLE 16inch light barrel marked C MP 5.56 NATO 1/9. Receiver marked C MB. Bayonet lug and flash suppressor. Please email for high res pics that show no wear and PERFECT parkerizing and anodized finish. 100% Mint, never fired. With original factory Colt manual and Accuwedge, also from Colt. All Colt. $650 shipped and insured.