Ribeyrolles

The Ribeyrolles 1918 was an attempt to manufacture an automatic rifle for the French forces. Its official name was Carabine Mitrailleuse 1918 (Machine Carbine 1918 in English). Ribeyrolles was chambered using experimental 8×35 mm rounds, straight blow-back, and fed from a 25 round magazine. The gun itself had an effective range of 400 meters. The cartridge, arguably the first purpose-built intermediate cartridge, was obtained by necking it down with .351 Winchester Self-Loading ammo. Ribeyrolles had the distinction of being fitted with a lightweight bipod on the front and a rifle bayonet identical to that of a Berthier Model 1907/15