Same rifle with the bolt open to show the India rubber annular obturating washer on the chamber end of the bolt that provided a combustion seal (of sorts for a while).
MAS 1936/51 bolt action rifle with rod bayonet stored in forestock under the barrel and integral grenade launcher and sight.
GENERALLY: The Mle1874 Gras and conversions of the Mle1866 to Mle1866-74 Gras is named for its designer, Artillery Captain Basile Gras, and is basically a conversion of the Mle1866 Chassepot, a needle fire weapon, to the metallic cartridge.
The Gras was BOTH a conversion of the Chassepot utilizing the entire rifle except for a redesigned bolt head mounting a cartridge extractor without separate ejector, and, owing to the need for modern arms, newly manufactured, even before the Chasspots were converted.
Grasrifles manufactured by Styer were also adopted by Greece to replace the earlier Mylonas rifle of Greek design, and French rifles were adopted in Columbia, Russia and Chili.