Multi-caliber firearm

Details Multi-caliber firearm Multi-caliber firearm

1991-04-18

1992-07-28

Carone, Michael J.

Firearms

Breech loading

Sliding breechblock

42 77, F41A 1514

Patent

active

051331420

ABSTRACT:
A multi-caliber firearm includes a breech, a pull-out claw at least partially disposed within the breech, and an adapter piece which is adjustably attached to the breech and onto which is formed a bearing surface which is located radially opposite the pull-out claw. The pull-out claw is capable of selectively engaging a cartridge case having a cartridge base. The position of the adapter piece is adjustable to enable the breech to accommodate cartridge cases having different cartridge base diameters. The adjustment of the adapter piece may be performed via rotation of an adapter piece formed with a plurality of steps ascending in a circumferential direction of the adapter piece, of via rotating an adapter piece which is screwed into the threaded bore and which moves radially with rotation of the adapter piece.

REFERENCES:
patent: 2711041 (1955-06-01), Harvey
patent: 3431669 (1969-03-01), Morrow
patent: 3680240 (1972-08-01), Barr et al.
patent: 3771415 (1973-11-01), Into et al.
patent: 3791060 (1974-02-01), Weaver
patent: 4253377 (1981-03-01), Arnett
patent: 4920676 (1990-05-01), Peters

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