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Patchett Mk.1
Patchett Machine Carbine
Country of origin

United Kingdom

Manufacturer(s)

Sterling Armaments Company

Designer(s)

George William Patchett

Year(s) designed

1942 - 1953

Weapon type

Submachine gun

Caliber

9x19mm


The Patchett Machine Carbine was a series of submachine guns designed by George William Patchett of the Sterling Armaments Company. The aim of the series was to replace the STEN gun in British service.

HistoryEdit

The first records of Patchett's submachine gun date back to 1942, where it was tested at RSAF Enfield. About 110 models were made and issued in very limited numbers to the 6th Airborne Division in Normandy and the 1st Airborne Division in Arnhem. Suggestions were made to improve the design and in 1944 a newer model with a ribbed bolt was introduced. It was named the Patchett Mk.2 and was tested against the BSA Machine Carbine, the MCEM3, and the Australian MCEM1 in 1947. It fired at about 600 rounds per minute but the trigger mechanism was slightly faulty and caused some firers to receive bad bruises on their fingers. This led to a redesign of the trigger mechanism, which ended up increasing the rate of fire well over 600 rounds per minute, which was considered excessive. BSA's Machine Carbine was favoured in the 1947 trials.

In May 1951, trials were held once again, this time with the BSA Machine Carbine, the Madsen Model 50 and the Australian MCEM2. It was clear during these trials that the Patchett gun was the best weapon, as BSA's weapon suffered severe cocking issues, the Madsen's magazine could not function properly in mud and sand, and the Australian MCEM2 had a complete failure to eject at one point. The Patchett gun's rate of fire had been reduced using a "net effect" achieved through replacing the secondary return spring. The Patchett gun excelled in the field stripping tests, as no tools were required to strip the weapon.

After the trials, the Ordnance Board suggested that the British Army adopt the Patchett gun if the EM-2 rifle failed to perform well in the submachine gun role. The Madsen was recommended for Line of Communication troops if the EM-2 turned out to be successful in the SMG role. In the end, troops were never issued the EM-2 at all, so the Patchett was adopted as the "Sub-machine gun, L2A1" on the 18th of September 1953.

Despite the weapon being officially named the "Patchett Machine Carbine" during trials, and even after adoption, troops simply referred to the weapon as the "Sterling". The name stuck and it became Sterling Armament Company's most iconic weapon. After the 50's, it was almost never referred to as the "Patchett gun".

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