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TYPE 1   Colt M1911                                         Issued to ca. #4,500





Pinned Base Plate, 2-Tone*, Lanyard Loop, Base Plate Edges Exposed





              Seamless tubing, 5 witness holes, 2 rivets





Type 1A                heat blue after tempering, ONE tone*





Type 1B                cyanide hardened to top 1”





Type 1C                                cyanide hardened below magazine catch





******                                Last pistols shipped w/Type 1 magazine ca. June 22, 1912





 





 





TYPE 2   Colt M1911                                         Issued to ca. #4,501 – 42,000





                Pinned Base Plate, 2 Tone, Lanyard Loop, Punch & Slot hole in back





Seamless tubing, 5 witness holes, based plate edges covered, 2 rivets





Type 2A                NO indent to assist feeding past mag catch





Type 2B                indent to assist feeding past mag catch





*******             Last pistols shipped w/Type 2 magazines ca. August 16, 1913





 





                Pinned Base Plate, 2-Tone, Lanyard Loop





                Sheet steel folded & welded, 5 witness holes, base plate edges covered, 2 rivets





                Lanyard Loop, Back Sides of Feed Lips Rounded





                ********           Last pistols shipped w/Type 3 magazines ca. October, 1915





 





TYPE 4   M1911 & M1911A1                          Issued to ca. #124,567-629,500 & 700,000-735,000





                Pinned Base Plate, 2-Tone, NO Lanyard Loop, Type 1 spring





                Sheet steel folded & welded, 5 witness holes, base plate edges covered, 2 rivets





                Same as Type 3 Magazine but with no lanyard loop.





                Type 4A                Colt                                                        No Marking





                37 to ’41               Colt        Military, Full Blued           No Marking








                37 to ’41               Colt        Commercial, Full Blued  COLT/.45 AUTO.








                Type 4B                American Pin Co.                              “A”





                Type 4C                                Barnes&Kabert Mfg. Co.               “B”





                Type 4D                M.S. Little Mfg, Co,                         “L”





                Type 4E                                Risdon Tool & Mfg, Co.                  “R”





                Type 4F                                Remington Arms-UMC                  No Marking, Identified by short base plate,1.550”             





                Type 4G               Raymond Engineering                    “R” on bottom of base plate





                Type 4H               Ferro Stamping & Mfg. Co.          None Delivered





                Type 4I                 International Silver Co.                  None Delivered





WWI Contract Manufacturers_____________________________________________________________________________________________





                        *********                                             Last pistols consistently shipped w/Type 4 magazines ca. July, 1941 although      





                                                Some were still in use into 1942





                *Ordnance Dept. drawing dated Jan. 15, 1936 shows a revision to the pin channels on the top





                of the base plates.  The center section of the pin channels are milled away and the centers of





                the pins can be viewed when looking down through the top of the disassembled magazine.  All               





                WWI magazines had pin channels extending across the full width of the magazine.  They did not              





                Have the center sections milled out.





 





Springfield Armory





                Type 1                   Sheet steel welding at left corner, folded flange bottom, copper plated top,





                                                Cyanide heat treated to mag catch slot, Lanyard Loop





                Type 2                   Same as Springfield Armory Type 1 but NO Lanyard Loop





                *******             Last pistols shipped w/Springfield Armory magazines ca. 1917





               





Type 5   M1911A1            





Type 5A                Full Blued          





                41 to ’43               Colt        Military                 No Marketing    Pinned & sandblasted base





                41 to ’43               Colt        Comm/Military





                                                                Full Blued            COLT 45 AUTO   Pinned & sandblasted base





                                                Colt        Military                 No Marketing    Spot-welded base








                                                Colt        Military                 COLT 45 AUTO   Spot-welded base








                Type 5B                M.S. Little Mfg, Co.                         “L”          Pinned Blue





                                                M.S. Little Mfg, Co.                         “L”          Spot-welded base





                                                M.S. Little Mfg,Co for Colt            “C-L”      Spot-welded base





                Type 5C                                Risdon Tool & Mtg. Co.                  “R”         Pinned Base





                                                Risdon Tool & Mtg Co.                   “R”         Spot-welded base





                                                Risdon Tool & Mtg. Co for Colt   “C-R”     Spot-welded base





                Type 5D                Scovill Mfg. Co.                                 “S”          Pinned base





                                                Scovill Mfg. Co                                   “S”          Spot-welded base





                                                Scovill Mfg. Co for Colt                   “C-S”     Spot-welded base





                Type 5E                                General Shaver Div./Rem.





Rand (early)                                       “G”         Welded back,Pinned base





General Shaver Div./Rem.





Rand (later)                                        “G”         Welded back, welded base





____________________Note: General Shaver mags used 2 variations of followers





                Type 5F                                Singers Sewing Machine Co.                       Pinned, highly polished base

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