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.

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.

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 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.

Ammunition storage and feeding system for light weapons that facilitates a continuous loading of the weapon, thereby relieving the user from multiple magazine replacements, and reducing potential weapon stoppages, thus providing more reliable and significantly uninterruptable use of the weapon with respect to operating the weapon with conventional magazines. According to an embodiment of the invention, the system is configured to automatically receive interlinked cartridges from a carrying device (e.g., a backpack or other convenient device harnessed to the user's body) through a flexible or semi-flexible leading means, to successively extract the cartridges from the linking arrangement and to successively feed each extracted cartridge into a dedicated magazine in a First In First Out (FIFO) manner.

A shell feeding system for a top loading shotgun in one embodiment includes a barrel, receiver, and a magazine. The magazine includes a cavity configured to receive a plurality of ammunition shells in stacked end-to-end relationship. The magazine is positioned above the barrel and extends forward from the receiver. A load gating and locking block engages and guide each shell in a feed pathway towards the lower part of the receiver for chambering. In one embodiment, the receiver and magazine may be formed as a unitary integral structure forming a single piece.

A shell feeding system for a top loading shotgun in one embodiment includes a barrel, receiver, and a magazine. The magazine includes a cavity configured to receive a plurality of ammunition shells in stacked end-to-end relationship. The magazine is positioned above the barrel and extends forward from the receiver. A load gating and locking block engages and guide each shell in a feed pathway towards the lower part of the receiver for chambering. In one embodiment, the receiver and magazine may be formed as a unitary integral structure forming a single piece.

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.