A World War I Greek Gras Rifle Bayonet 1874 Patern The Gras rifle, introduced in 1874, was a conversion of the Chassepot rifle in order to allow it to take a metallic cartridge. Introduced at the same time, the Gras bayonet was a departure from the design of the earlier Chassepot bayonet, having an epee style blade suitable only for thrusting. This bayonet is in very good condition. German contract for the Greek army made by Styer