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Colt Conversion Unit .22 LR-.45 ACP - Known Examples

Colt Conversion Unit .22 LR-.45 ACP
  While the description is deceiving, the ".22 - .45" units converted the standard .45 ACP Government Model, Model 1911 and Model 1911A1 into .22 caliber pistols.
Serial Number Description
U21

Charged to Colt's Loan Account and shipped to the National Matches, Camp Perry, Ohio on August 11, 1938. This was processed on Colt Factory Number 8045 and was one of 10 units in shipment. The letter further remarks that this conversion unit was returned to Colt on November 17, 1938 and reshipped to West Chester Trading Company in Mt. Vernon, New York on December 5, 1938 with 5 other units. This single unit was returned to Colt again on September 16, 1939. There is no further record indicating that subject conversion unit was shipped again from the Colt factory.

U24  
U29

Charged to Colt's Loan Account and shipped to the National Matches, Camp Perry, Ohio on August 11, 1938. (Also see U21 which was in this same Camp Perry shipment of 10 units.) This was processed on Colt Factory Number 8045 and was one of 10 units in shipment. The records further indicate this conversion unit was returned to the factory on November 17, 1938 and subsequently shipped to Zeppelin Arms company in Akron, Ohio on December 1, 1938. They purchased the conversion unit at the 1938 Camp Perry National Matches.

U56  
U75

Shipped to Thompson-Diggs Company, Sacramento, California on September 1, 1938, (1 of 2)

U177

Shipped to Phil Bekaert, San Francisco, CA

U216

Shipped to Stoeger Arms Company, New York, New York on September 16, 1938. (1 of 4)

U229

Shipped to Von Lengerke & Antoine, Chicago, Illinois on September 2, 1938. (1 of 3)

U272  
U302  
U309  
U310

Shipped to Alexander Kagen, Reading PA on January 24, 1939.

U348  
U357  
U371

King Gun Sight Company, San Francisco, California on March 3, 1939. Date of Manufacture was February 10, 1939. (1 of 2)

U378  
U486  
U500

U.S. Government Co. C 11th Infantry P.N.G., Norristown, Pennsylvania. Shipped May 27, 1940 (1 of 1)

U504  
U561  
U563  
U629  
U642  
U777  
U783  
U785

Shipped to George Davis, Alton, Illinois, August 30, 1939 (1 of 1)

U804  
U812  
U902

Shippped to Abercrombie & Fitch Company, New York, New York on February 7, 1941 (1 of 1)

U971  
U994

165th Infantry New York National Guard, New York, New York. Shipped February 3, 1940 (1 of 6)

U997  
U998  
U1065  
U1079  
U1100  
U1117  
U1131

U.S. Government Depot Quartermaster, U.S. Marine Corps Philadelphia, Pennsylvania. Colt Factory Order #241 (1 of 30) Shipped Sept. 30, 1941

U1140  
U1318

W.J. Bennett, New York, New York, Sharp Paper & Specialty Company, April 5, 1940 (1 of 1)

U1333

Shipped to Richmond Hardware Co, Richmond, VA for The Adjutant General of Virginia, Commonwealth of VA, Fulton Warehouse, Richmond, VA on March 6, 1942 (1 of 11) Processed on Colt Factory Order number 1383.

U1334  
U1354

Sold to the United States Government and shipped May 5, 1942 to the Depot Quartermaster, United States Marine Corps, Philadelphia, Pennsylvania. Processed on Colt Factory Order Number 241.(1 of 15)

U1398  
U1481  
U1483  
U1492

Sold to the United States Government and shipped December 17, 1942 to the Depot Quartermaster, United States Marine Corps, 1100 S. Broad Street, Philadelphia, Pennsylvania. (1 of 65)

U1555  
U1597

U.S. Government Depot Quartermaster, U.S. Marine Corps 1100 South Broad Street, Philadelphia, Pennsylvania, December 30, 1942, Colt Factory Order #241 (1 of 36)

U1646 USMC Shipped Unit. Original box numbered to unit shows top label for .45-.22 Government Model Conversion Unit (for use with the SM Ace Only)
U1725 U.S. Government Depot Quartermaster, U.S. Marine Corps 1100 South Broad Street, Philadelphia, Pennsylvania, January 7, 1943, Colt Factory Order #241 (1 of 36)
U1735  
U1748 Sold to the United States Government, shipped to Transportation Officer, Fort Myer, Rosslyn, Virginia for Ordnance Officer. Unit was one of 50 in the shipment and was process on Colt Factory Order number 1979. This unit was shipped February 22, 1943
U1755  
U2104  
U2174  
U2245  
U2293 Marshall Wells Company Spokane, Washington, Shipped October 28, 1946 (1 of 3)
U2393  
U2406  
U2458  
U2564  
U2582 Richard Weir, Box 71 New Monmouth, New Jersey, November 7, 1946 (1 of 1)
U2632  
U2654 W.A.L. Thompson Hardware Company, Topeka, Kansas. Shipped November 7, 1946 (1 of 4)

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