These were the standard commercial Winchester Model 1200 shotguns produced during the late 1960s and early-mid 1970s that were purchased and adapted for the military with a bayonet lug/heat shield and U.S. marked. By the time most of these were delivered to the U.S. Military, the Vietnam War was nearing its end and very few are believed to have made it overseas to Southeast Asia. Some of these remained in service and saw use in Grenada, Panama, the Persian Gulf, Somalia, Iraq and Afghanistan. Most were destroyed after their service, lending to their scarcity today, with sparse government records of contract deliveries. The barrel is equipped with a six hole pattern heat shield with the bayonet lug adapter, marked with part number "11686389", on the front end that is secured to the barrel with three screws. The bayonet lug on this shotgun is sized for the M1917 bayonet, which remained in service through the time this gun would have been in use. The barrel is marked for cylinder choke and a 2 3/4 inch chamber, with "U.S." above the standard markings, and the frame is marked "U.S." on the underside below the serial number and "AAD 10-88" on the bottom left edge, likely an Augusta Arsenal rebuild mark. Blue/black anodized alloy frame, parkerized steel barrel, magazine tube, heat shield, bayonet adapter, loading gate and bolt. Fitted with an extended forearm and pistol grip stock with a black plastic buttplate. 14 inch length of pull. Includes a correct Vietnam era Gen Cut M1917 parkerized bayonet with black plastic grips, olive drab green plastic scabbard, olive drab green canvas sling, U.S. Army Technical Manual TM 9-1005-303-14 and a sealed ten round box of Winchester 00 buckshot XM162 12 gauge Vietnam era ammunition.