Gas operated firearm

F - Mech Eng,Light,Heat,Weapons – 41 – A

Patent

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Details

F41A 3/00 (2006.01) F41A 5/18 (2006.01) F41A 19/14 (2006.01) F41C 7/00 (2006.01) F41C 23/06 (2006.01)

Patent

CA 2257620

A known gas operated firearm has been modified to be of more compact size and reduced weight while retaining the firepower, the features, and most of the components of its predecessor. A trigger mechanism (42) includes a hammer (44A) biased for movement toward the firing position from a cocked position whose recessed face (94) squarely impacts the firing pin (50A). A second transverselyextending recess (102) in the hammer face (92) provides clearance for a transversely extended retaining pin (104). Expanding gases from a cartridge (36A) whose bullet has passed a gas port (52) proceeds past the gas port (52), then through a gas passage tube (106) and against a pressure surface of a bolt assembly (48A) for driving the bolt assembly (48A) toward a recoil position.

L'invention concerne une arme à feu à gaz modifiée pour avoir une taille plus compacte et un poids réduit, mais avec maintien de la puissance de feu, des caractéristiques et de la plupart des éléments constitutifs de ses prédécesseurs. Un mécanisme de détente (42) comporte un chien (44A) actionné par ressort vers la position de feu depuis la position armée. La face du chien a une cavité (94) qui frappe à angle droit le percuteur (50A). Une seconde cavité transversale (102) dans la face (92) du chien laisse passer une goupille de retenue transversale (104). Les gaz en expansion provenant d'une cartouche (36A) dont la balle a franchi le niveau d'une sortie de gaz (52) sont évacués par cette sortie (52). Ils empruntent un conduit de gaz (106) et agissent sur une surface de pression d'un ensemble culasse mobile (48A) pour mettre cet ensemble (48A) en position de recul.

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