Introduced late in World War II, the M2 Carbine was designed to work both as a factory-made machine gun as well as an armorer upgrade to the extant M1 carbine; this flexibility allowed armorers and arsenals to rapidly swap M1 and M2 components as needed to fulfill TOE requirements, and some manufacturers would make carbine receivers sans model number until the end of production, roll stamping the rest of the markings and then hand-stamping the "1" or "2" as needed for the day. "N" marked blade front and "HI" marked adjustable rear sights, undated Winchester barrel, and an overstamped number "2" on top of the original "1" mark on the receiver ring as typical of a period field converted M2 carbine. The transfer bar, selector switch, hammer, and milled trigger housing are not maker marked. Fitted in an unmarked modern reproduction low wood stock with an unmarked Type III barrel band, "IO" four-rivet upper handguard, and checkered buttplate. "UQ" marked magazine. Includes oiler and green canvas sling.