Abrégé

The invention relates to a semi-automatic pistol comprising: a stationary plastic support (2) on which the barrel (3) is over-moulded; and an outer slide (17), an inner slide (10), a locking needle (11), two locking cams (12) and a frame, also all made from plastic. The frame is formed by two plastic parts, namely a right-hand case (28) and a left-hand case (48) which are clipped to one another and, consequently, remain stationary with the stationary support (2), forming a non-detachable assembly. The stationary support (2) comprises a guide (20) for the piston (19), positioned close to the mouth (21) of the barrel (3) and connected to the barrel (3) by means of a pressure duct (64). According to the invention, the plastic outer slide (17) contains a piston (19) that is engaged in the aforementioned piston guide (20), forming a piston actuated by the gases produced during firing.

Classes IPC  ?

• F41A 3/78 - Amortisseurs ou dispositifs récupérateurs pour les blocs de culasse
• F41A 5/24 - Mécanismes ou systèmes automatiques de déverrouillage de la culasse à l'aide d'une force créée par une charge propulsive par emprunt des gaz la pression des gaz agissant directement sur le bloc de culasse ou sur les verrous
• F41A 3/62 - Mécanismes de culasse, p.ex. verrouillages utilisant la pression des gaz de combustion pour renforcer la force du verrouillage mécanique ou pour retarder le mouvement d'ouverture du bloc de culasse