Chambering of low-energy training ammunition in automatic firearms
AssigneeSNC Industrial Technologies Inc./Les Technologies Industrielles SNC Inc.
InventorSylvain Dionne
Life of this patent
Estimating the term…
Abstract
A barrel positioning spring moves a barrel in a blow-back operating pistol earwardly when the slide recoils in order to position the chamber on the barrel to receive a further cartridge with the return of the slide. This spring in a Colt(.TM.) .45 caliber pistol may be seated on the recoil spring guide rod present beneath the barrel. A removable loading ramp extension is fitted to the frame in the space between the chamber end and the next cartridge to receive such cartridge as it is being chambered by the returning slide.
Claims3
A training barrel conversion kit for an automatic pistol having a frame, a cartridge magazine having a top end and containing cartridges each with a cartridge nose end and a slide that is free to move rearwardly, independently of the barrel, comprising:
- (a) a training barrel with muzzle and chamber ends incorporating a chamber with a chamber entrance at the chamber end, and having a protrusion in the form of a barrel lug extending laterally from the barrel;
- (b) a barrel positioning spring that is coupled to the frame and bears on the barrel lug;
- (c) a recoil spring positioned to thrust the slide in the forward direction with respect to the frame, the strength of the recoil spring being greater than the strength of the barrel positioning spring;
- (d) a recoil spring guide rod positioned within the recoil spring, said guide rod being thrust at its rearward end by the recoil spring rearwardly against the frame;
- wherein said barrel positioning spring is installed at the rearward end of the recoil spring guide rod and is seated thereon in a compressed state to apply its force of expansion rearwardly against the forward facing surface of the training barrel lug, whereby, upon firing of the weapon, the barrel positioning spring moves the barrel rearward to a position for receiving the next cartridge from the magazine.
Dependencies are inferred from the claim text.