Inland Division of General Motors was the largest single producer of M1 Carbines, manufacturing over 2.6 million. Identical to Winchester design — Inland's GM manufacturing expertise made them the volume leader. Type: Carbine Action: Gas-Operated Caliber: .30 Carbine Capacity: 15 Year introduced: 1942, USA Weight: 53 oz Overall length: 35.6" Status: Discontinued Military use: Yes Intended use: military