


The first was produced and delivered from late 1942 through until October 1943. The M1A1 was manufactured in two main production runs, both of approximately 70,000. Inland Manufacturing Division of General Motors was the only manufacturer of the M1A1 and manufactured approximately 140,000 by the close of the war. During WWII the M1A1 stocks and parts in the possession of Springfield Armory, whether made by Springfield or another manufacturer, were for use as replacements. Reassembly required the use of new rivets.

Inland Division Of General Motors M1 Carbine 'X' Series Serial Number Description: This Inland has the barrel date of 8-45.M1A1s produced during the beginning of the second run, will have the same characteristics as the first run, but towards the end of the run, will have features typical of a late M1, such as low wood, adjustable sights and even type 3 barrel bands at the very end of the run. The second production run, started in April 1944 and finished at the end of 1944.
