WWII U.S. Standard Products M1 Semi-Automatic Carbine
Barrel marked "INLAND MFG. DIV./GENERAL MOTORS/8-44". Left side of buttock marked "STD/PROD/RWH". Sling slot numbered "139". Holes drilled into left side of the stock to accommodate the M15 grenade launching sight. BLUE SKY import marked.
These M1 carbines are great fun to own and shoot and make great home defense carbines as well.