M1 Carbine Manufacturers by serial number blocks.
From:___ To:_____ Company:_________________
0,000,001 0,000,005 Inland Division, General Motors
0,000,006 0,000,010 Winchester Repeating Arms
0,000,011 0,999,999 Inland Division, General Motors
1,000,000 1,349,999 Winchester Repeating Arms
1,350,000 1,449,999 Underwood, Elliott, Fisher
1,450,000 1,549,999 National Postal Meter
1,550,000 1,662,519 Quality Hardware Mfg. Corp
1,662,520 1,762,519 Rock-ola Mfg. Corp
1,762,520 1,875,039 Irwin Pedersen-Saginaw Gear
1,875,040 1,937,519 Quality Hardware Mfg., Corp
1,937,520 1,982,519 National Postal Meter
1,982,520 2,352,519 Standard Products
2,352,520 2,912,519 Underwood, Elliott, Fisher
2,912,520 3,212,519 Inland Division, General Motors
3,212,520 3,250,019 Irwin Pedersen-Saginaw Gear
3,250,520 3,651,519 Saginaw (Saginaw) Division
3,651,520 4,009,999 International Business Machines
4,010,000 4,074,999 Underwood, Elliott, Fisher
4,075,000 4,075,009 Winchester Repeating Arms
4,075,010 4,432,099 National Postal Meter
4,432,100 4,532,099 Quality Hardware
4,532,100 4,632,099 Rock-Ola Mfg. Corporation
4,632,100 4,879,525 Quality Hardware Mfg. Corp.
4,879,526 5,549,921 Inland Division, General Motors
5,549,922 5,834,618 Winchester Repeating Arms
5,834,619 6,071,188 Saginaw (Saginaw) Division
6,071,189 6,099,688 Rock-Ola Mfg. Corporation
6,099,689 6,199,688 Underwood, Elliott, Fisher
6,199,689 6,219,688 Rock-Ola Mfg. Corporation
6,219,689 6,449,867 Inland Division, General Motors
6,449,868 6,629,883 Winchester Repeating Arms
6,629,884 7,234,883 Inland Division, General Motors
7,234,884 7,369,660 Winchester Repeating Arms
7,369,661 8,069,660 Inland Division, General Motors