A semiautomatic shotgun comprising a receiver, a barrel, a forward gas block assembly attached to the barrel, a slider assembly rearward of the gas block assembly extending into the receiver. Upon firing a shotshell the explosive gases in the barrel are diverted through two ports into the gas block assembly, specifically into a pair of lateral pressure relief valves positioned on both sides of the barrel. The pressure relief valves further having a gas pathway to a piston chamber. A piston is forced rearwardly and engages a slider of the slider assembly that is linked to a breech block in the receiver. The breech block loads unfired shells and ejects the fired shells accomplishing the semiautomatic recycling. The dual pressure relief valves actuate to moderate and limit the gas pressure that enters the piston chamber when using shotshells of different power levels thereby providing consistency in the recycling operation.

A shotgun has right and left magazines from which ammunition may be fed to the action using a selector mounted on a movable fore-end chassis whose motion cycles the action. An interrupter prevents the selector from switching between magazines unless the action is in battery with the fore-end chassis fully forward toward the muzzle end of the shotgun. Respective right and left outer cut-offs on the magazines cooperate with an inner cut-off to ensure proper coordination of ammunition feed as the action is cycled by motion of the fore-end chassis. The outer cut-offs are also manually operable to permit removal of ammunition from the magazines without cycling the action.

A shotgun has right and left magazines from which ammunition may be fed to the action using a selector mounted on a movable fore-end chassis whose motion cycles the action. An interrupter prevents the selector from switching between magazines unless the action is in battery with the fore-end chassis fully forward toward the muzzle end of the shotgun. Respective right and left outer cut-offs on the magazines cooperate with an inner cut-off to ensure proper coordination of ammunition feed as the action is cycled by motion of the fore-end chassis. The outer cut-offs are also manually operable to permit removal of ammunition from the magazines without cycling the action.

A firearm having reduced muzzle rise is disclosed. The firearm includes a barrel having a breech end, an opposing muzzle end, and a bore defining a barrel centerline which, when extended in a longitudinal direction, defines a barrel axis. The firearm further includes a magazine tube disposed above the barrel, a receiver defining a lower opening to receive the barrel, and an upper opening to receive the magazine tube. The firearm further includes a stock defining a body support surface where the stock braces against a user's body. The barrel axis passes through the body support surface of the stock.

A novel three columned magazine structure with high cartridge capacity developed for automatic shotguns that are able to perform rapid fires, which enables the firearm to have more than one type of cartridge at the same time ready to be fired from the shotgun structure, and allows different type of cartridge structures to be fired in desired order.

A novel three columned magazine structure with high cartridge capacity developed for automatic shotguns that are able to perform rapid fires, which enables the firearm to have more than one type of cartridge at the same time ready to be fired from the shotgun structure, and allows different type of cartridge structures to be fired in desired order.

A shotgun is formed of sub-assemblies which include a lower receiver upon which a butt stock and an upper receiver are mounted. The lower receiver houses the fire control mechanism, the butt stock includes an ammunition elevator and a breech cover. Magazine tubes, ammunition cut-offs, a selector, a selector interrupter and the barrel are mounted on the upper receiver.

A shotgun is formed of sub-assemblies which include a lower receiver upon which a butt stock and an upper receiver are mounted. The lower receiver houses the fire control mechanism, the butt stock includes an ammunition elevator and a breech cover. Magazine tubes, ammunition cut-offs, a selector, a selector interrupter and the barrel are mounted on the upper receiver.

Apparatus and associated methods relate to a firearm speed loader comprising (a) an elongated tube assembly for holding one or more ammunition cartridges in a central lumen defined by a wall of the tube assembly and (b) an elongated aperture formed in the wall of the tube assembly. In an illustrative example, two grooves may be formed into the wall distal to a proximal end of the tube assembly. One or more cartridges may be inserted into the central lumen by aligning the rim of each cartridge with the grooves. A user may place a digit of a hand into the central lumen and urge the cartridges from the proximal end to a distal end of the tube assembly, thereby causing the cartridges to be pushed from the tube assembly into the firearm. Various embodiments may advantageously reduce a time necessary to reload a firearm magazine.

Apparatus and associated methods relate to a firearm speed loader comprising (a) an elongated tube assembly for holding one or more ammunition cartridges in a central lumen defined by a wall of the tube assembly and (b) an elongated aperture formed in the wall of the tube assembly. In an illustrative example, two grooves may be formed into the wall distal to a proximal end of the tube assembly. One or more cartridges may be inserted into the central lumen by aligning the rim of each cartridge with the grooves. A user may place a digit of a hand into the central lumen and urge the cartridges from the proximal end to a distal end of the tube assembly, thereby causing the cartridges to be pushed from the tube assembly into the firearm. Various embodiments may advantageously reduce a time necessary to reload a firearm magazine.