According to the U.S. M1 Carbine Serial Numbers production chart, this Underwood-Elliot-Fisher U.S. Carbine was produced in 1944, although the original barrel represents a December, 1943, production. MARKINGS: "UNDERWOOD/ 4067508" on the rear receiver, "UNDERWOOD/ 12-43/ Flaming Bomb" on the top of the barrel, "P" proofed on top of the barrel, "U" on the magazine and "U.S. CARBINE/ CAL. 30 M1" on the front receiver. SPECS: 18" Barrel, adjustable rear peep sight, front band sight with ears and green nylon sling. CONDITION: This gun is in nice condition with battle wear, has an excellent sharp/ clean bore and appears to be in good working order. This rifle comes with a Certificate Of Authenticity from the Civilian Marksmanship Program (CMP) and manual. Each M1 Garand rifle sold by CMP is an authentic U.S. Government rifle that has been inspected, headspaced, repaired, if necessary, and test fired for function. HISTORY: The M1 Garand is a .30-06 caliber semi-automatic rifle that was the standard U.S. service rifle during World War II and the Korean War. The M1 rifle was named after its Canadian-American designer, John Garand. The M1 Garand replaced the bolt-action M1903 Springfield as the standard U.S. service rifle in 1936, and General George S. Patton called it "the greatest battle implement ever devised". It is a gas-operated, 8 shot clip-fed, semi-automatic rifle that is 43.6" long, weighs about 9.5 pounds and has a 24" barrel. The M1 Garand was made in large numbers, primarily by U.S. Springfield, during World War II. FREE SHIPPING & NO PROCESSING FEES.