Abstract: A magazine floor plate latch for releasing the hinged floor plate of a cartridge magazine in a bolt action firearm. A spring biased latch having two upper legs and one lower leg is positioned in a central aperture in the front face of a trigger guard. The latch is adapted to pivot about a pivot point at a line of contact between a pointed surface in the trigger guard extending upward and fitting into a notch formed in the lower leg of the latch. The latch is normally biased by a spring so that one of its upper legs blocks the floor plate to keep it from swinging open about its hinged end. The floor plate is released by applying pressure on the latch so that it pivots until this upper leg no longer blocks the plate. This upper leg has a curved locking surface with a center of curvature offset from the pivot point to enable the locking surface to relatch the floor plate tightly against the bottom of the magazine as the latch pivots to its normally spring biased position.

Abstract: A pattern control system for a shotgun and the method of making the system in which one or more choke attachments are detachably mounted on the muzzle end of the shotgun barrel and the barrel bore and one or more progressively reduced choke constrictions, either in the bore and the choke attachments or in the attachments alone, are formed at the same time in order to eliminate tolerance buildup between the choke attachment bore constrictions and the barrel bore. By adding or deleting choke attachments, it is possible to achieve the choke constriction which will provide the desired pattern pellet density at the selected distance from the muzzle of the shotgun.

Abstract: An adjustable means connecting the muzzle ends of barrels in an over-and-under firearm, which adjustable means when actuated causes a separation of the barrels, thus altering the point of impact of projectile means discharged from the barrels which have been moved.