1851 RICHARDS-MASON NAVY bbl. 7 ½″

1851 RICHARDS-MASON NAVY

In 1871, an employee from Colt by the name of Charles Richards was awarded a patent for converting Colt percussion models to breech loading cartridge revolvers. The Richards cartridge conversion was an instant success. On July 2nd, 1872, William Mason, another employee from Colt, was awarded a patent for an improvement to the Richards model. As percussion parts ran short, the 1860 Richards-Mason barrel was changed from the profile of the earlier percussion model, to the sleek profile found on the 1871-72 Open Top. The 1858 New Army improved conversion was introduced by Remington in circa 1873 with special factory installed two piece cylinder, leaving the loading lever and adding an ejector.

The combination of the design patented by Richards and the cartridge system patented by Mason is kwon as the Richards-Mason conversion. The characteristics that identify this model are: the rear ring without sight and with a cleft to allow the hammer to hit the cartridge and the special barrel made for the Richards-Mason project. (Trademark owned by Cimarron Firearms)

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In 1871, an employee from Colt by the name of Charles Richards was awarded a patent for converting Colt percussion models to breech loading cartridge revolvers. The Richards cartridge conversion was an instant success. On July 2nd, 1872, William Mason, another employee from Colt, was awarded a patent for an improvement to the Richards model. As percussion parts ran short, the 1860 Richards-Mason barrel was changed from the profile of the earlier percussion model, to the sleek profile found on the 1871-72 Open Top. The 1858 New Army improved conversion was introduced by Remington in circa 1873 with special factory installed two piece cylinder, leaving the loading lever and adding an ejector.
The combination of the design patented by Richards and the cartridge system patented by Mason is kwon as the Richards-Mason conversion. The characteristics that identify this model are: the rear ring without sight and with a cleft to allow the hammer to hit the cartridge and the special barrel made for the Richards-Mason project. (Trademark owned by Cimarron Firearms)


FinishesTechnicalParts and Schematics
000: STANDARD
A00: OLD WEST ANTIQUE PATINA FINISH REV.
B02: COIN FINISH HARDENING
C00: CHARCOAL BLUE FINISH
G08: HAND RUBBED OIL ON SELECTED WOOD
G13: POLYMER IVORY GRIPS
G16: POLYMER PEARL GRIPS
W00: WHITE FINISH FOR REV.
G23: “TIFFANY” GRIP
G24: “TIFFANY” SOLID SILVER GRIP
N00: NICKEL PLATING FOR REV.
Caliber: .38SP
Length of Barrel: 4¾” – 5½” – 7½”
Overall Length: bbl.5½” 11.18″
Weight: bbl.5½” 2.60 lbs
Barrel: Forged steel
Frame: Forged steel and color case
Triggerguard: Brass
Grip: Two pieces walnut
Cylinder 6
Barrel Shape: Round Tapered



Item Model Barrel Length cal.
0924 RICHARDS-MASON REV.4.34″.38SP CAT.13735 4.3/4″ 38 SPEC.




0925 RICHARDS-MASON REV.7 12″.38SP CAT.12311 7.1/2” 38 SPEC.




0926 RICHARDS-MASON REV.5.1/2″.38SPEC. CAT.12663 5.1/2” 38 SPEC.




0927 RICHARDS-MASON REV.7.1/2″.38 L.C. CAT.12310 7.1/2” 38LC




0928 RICHARDS-MASON REV. 5.1/2″.38 L.C. CAT.12662 5.1/2” 38LC




0929 RICHARDS-MASON REV.4.3/4″.38 L.C. CAT.17734 4.3/4″ 38LC




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