I have a M1 Carbine with the paratrooper stock. The serial number is103xxx. The barrel is stamped Inland Mfg Div., General Motors 12-42. It is in excellant condition but some things don't seem right. The bolt is round, it has a bayonet lug and the barrel band is marked KI. The folding stock seems correct including the oiler and the cast butt plate and the grip is stamped with a large P and a smaller P. The left side of the stock is stamped A A W. The magazine release is stamped with a single M and just forward of the trigger guard is a flaming bomb. Does anyone know if this is an original paratrooper carbine or just a shooter some one constructed?