Biwarip machine carbine
Country of origin

United Kingdom

Year(s) designed

Late 1930s

Production began


Production ended


Weapon type

Submachine gun


9x19mm Parabellum



Magazine/Cylinder capacity

30-round detachable box magazine

The Biwarip machine carbine is a prototype British submachine gun.


The Biwarip was designed in the late 1930s, and submitted to the British Small Arms Committee for testing in August 1938. It was a very handy weapon, and a modern one at that. However, it was too light to sustain any sort of accurate fire, and was rejected with no recommendations for improvement.

Design DetailsEdit

The Biwarip was a fairy simple weapon; it had no sights, stock, perforated handguard and a side-mounted magazine well. It fited using blowback. Four years after the Biwarip was tested, George William Patchett presented his submachine gun design to the Ordnance Board in 1942, which was very similar to the Biwarip.


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