According to Schiffer Military’s book The M1 Carbine: Markings, Variants, Ammunition ... The piston is held in the gas block under the barrel and concealed by the stock. When a shot is fired and the ...

30, M1.” The carbine represented a new category of ... had a circled “P” proofmark stamped on the rear of the stock. This marking was not generally found on the later stocks.

Countless new walnut stocks were made for M1 Garands ... Fabrique Nationale did not add any known markings, even some markings found on postwar M1 carbine magazines and generally attributed ...

According to Schiffer Military’s book The M1 Carbine: Markings, Variants ... in the gas block under the barrel and concealed by the stock. When a shot is fired and the bullet passes the gas ...