Was my M1 Carbine with Serial Number 5147455 built in World War 2?

All US Military M1 Carbines were built during WW 2. The only ones built after the war were civilian copies.My research indicates that your serial number was assigned to the Inland division of general motors for the time span of Jan.1944-Aug.1944.The serial number range was 4,875,526-5,589,820.All serial numbers were assigned to blocks of serial numbers by the War department,and then issued to all manufactures of the M-1 Carbine.There were 9 different manufactures of the M-1 carbine during World War II.