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Colt Model 1911A1 U.S. Army .45 ACP - Production Information

M1911A1 OF U.S. ARMY PRODUCTION

Year

SN Range

Manufacturer

Quantity

1924 700001-710000 Colt 10000
1937 710001-711605 Colt USN, USA 1605
  711606-712349 Colt USN 744
1938 712350-713645 Colt 1296
1939 713646-717281 Colt USN 3636
1940 717282-721977 Colt 4696
1941 721978-756733 Colt 34756
1942 756734-793657 Colt 36924
  793658-797639 Colt USN 3982
  797640-800000 Colt 2361
1941 S800001-S800500 Singer 500
1942 H800501-H801000 Assigned to H&R 0
  801001-856100 Colt 55100
1943 856101-958100 Colt 102000
  856101-856404 Replacement Nos 304
  *856405-916404 Ithaca 60000
  *916405-1041404 Remington Rand 125000
  *1041405-1096404 Union Switch 55000
  1088726-1092896 Colt 4171
  1096405-1208673 Colt 112269
  1208674-1279673 Ithaca 71000
  1279674-1279698 Replacement Nos 25
  1279699-1441430 Remington Rand 161732
1944 1441431-1471430 Ithaca 30000
  1471431-1609528 Remington Rand 138098
  1609529-1743846 Colt 134318
  1743847-1816641 Remington Rand 72795
  1816642-1890503 Ithaca 73682
  1890504-2075103 Remington Rand 184600
1945 2075104-2134403 Ithaca 59300
  2134404-2244803 Remington Rand 110400
  2244804-2380013 Colt 119450
  (2368718) Last Colt  
  2380014-2619013 Remington Rand 85126
  (2465139) Last Remington Rand  
  2619014-2693613 Ithaca 41305
  (2660318) Last Ithaca  

* Colt duplicated the following serial numbers:
60000 pistols in Ithaca Range 856405-916404
41696 pistols in the Remington Rand Range 916405-958100
4171 pistols in the US&S serial range

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