Manufactured in March of 1939, this is a very early production M1 Garand semi-automatic rifle. While no documentation is provided with the rifle, it is likely that it started out in the early "Gas Trap" configuration, and like most was reconfigured to the more common gas port system, as well as receiving modifications to the receiver to resolve the "7th round stoppage" issue that emerged early in production. Most of these very early Garands were used virtually to the point of destruction during World War II and Korea, and are difficult to find in any condition. The barrel is marked "S-A 12-40", with British commercial-pattern proof marks on top, the early screw plug in the front sight base, a slotted gas plug, "1" on the gas cylinder, and "C-46000-0" on the barrel band. An additional "BMP" Birmingham proof is present on top of the receiver. The hammer, safety and trigger housing are "SA" marked, with the bolt "D28287/J 2" on the bolt, and "D 35382-0" on the uncut operating rod. The stock bears a faint "SA" cartouche and crossed cannons on the left side, with a circled "P" on the wrist and a checkered trapdoor buttplate.