Abrégé

Mid lock-up receivers have an elongated body, the body defining a passage, the body having a first rear portion and a second forward portion adjacent to and forward of the rear portion, the first rear portion defining a first passage segment having a first diameter and the second forward portion defining a second passage segment having a second diameter greater than the first diameter, a stop surface defined at a forward end of the first rear portion, an elongated sleeve defining a sleeve passage and received in the second passage segment, the sleeve having a rear-facing limit surface spaced apart from the stop surface, and the sleeve being compressively received in the body wherein the body is in tension about the sleeve, and the sleeve is compressed by the body. The sleeve may be thermally bonded to the body.

Classes IPC  ?

• F41A 3/66 - Boîtes ou châssis de culasse; Carcasses
• F41A 3/22 - Mécanismes à verrous rigides, c. à d. les éléments de verrouillage formant un assemblage rigide avec, respectivement, le bloc de culasse ou son levier de manœuvre, et le tube de l'arme ou la boîte de culasse les verrous tournant autour de l'axe du tube de l'arme, p.ex. verrous de culasse cylindriques rotatifs à commande manuelle le verrouillage étant effectué par la rotation de la poignée ou du levier d'armement transversalement à l'axe du tube de l'arme

Abrégé

Mid lock-up receivers have an elongated cylindrical body, the body defining a passage, the body having a first rear portion and a second forward portion adjacent to and forward of the rear portion, the first rear portion defining a first passage segment having a first diameter and the second forward portion defining a second passage segment having a second diameter greater than the first diameter, a forward facing step surface defined at a forward face of the first rear portion, an elongated cylindrical sleeve defining a sleeve passage and received in the second passage segment, the sleeve having a rear end spaced apart from the step surface, and the sleeve being compressively received in the body wherein the body is in tension about the sleeve, and the sleeve is compressed by the body. The sleeve may be thermally bonded to the body.

Classes IPC  ?

• F41A 3/22 - Mécanismes à verrous rigides, c. à d. les éléments de verrouillage formant un assemblage rigide avec, respectivement, le bloc de culasse ou son levier de manœuvre, et le tube de l'arme ou la boîte de culasse les verrous tournant autour de l'axe du tube de l'arme, p.ex. verrous de culasse cylindriques rotatifs à commande manuelle le verrouillage étant effectué par la rotation de la poignée ou du levier d'armement transversalement à l'axe du tube de l'arme