A modular rail system for an upper receiver of a firearm is provided, the modular rail system having: a bottom portion configured to be removably secured to the upper receiver, wherein the bottom portion has an integrally formed bottom rail and a forward portion located forward of a top rail of the upper receiver; an upper rail extension configured to be removably secured to the forward portion of the bottom portion; and a release mechanism for releasably securing the upper portion to the forward portion of the bottom portion.
A gas regulator for a rifle is provided, the gas regulator having: an elongated member having a first end and a second end; a head portion located at the first end; a pair of openings passing through the elongated member, wherein one of the pair of openings is larger than the other one of the pair of openings; and a recessed area located at the second end.
A firearm having a lower receiver is provided. The receiver is adapted to couple with a plurality of upper receivers having different calibers. The lower receiver comprises a receiver extension having an opening therein. A spring is disposed within the opening. A buffer member is provided having a first portion having an end. The buffer member is coupled to the spring within the opening, wherein the buffer member is movable between a first position where the end is within the opening and a second position wherein the end external to the opening.
A front sight for a weapon, the front sight having: a mounting block; a tower pivotally mounted to the mounting block for movement between a first position and a second position; a first locking mechanism comprising a plurality of spring biased members for retaining the tower in the first position and the second position, the plurality of spring biased members being configured to allow movement of the tower between the first position and the second position in response to a force applied to the tower; and a second locking mechanism configured to lock the tower in the second position, wherein the second locking mechanism must be manually released before the tower can be moved from the second position to the first position.
An upper receiver for a weapon, the upper receiver having a plurality channels each being oriented in a first direction and wherein each of the plurality of channels intersect an elongated channel extending in a second direction; a modular rail having a pair of securement features configured to be slidably received within a pair of the plurality of channels such that modular rail can slide in the pair of the plurality of channels in the first direction until the pair of features can slide within the elongated channel in the second direction.
A bolt for a firearm is provided herein, the bolt having: an extractor pivotally mounted to the bolt for movement between at least a first position and a second position, the extractor having a hook member located at a distal end of the extractor, wherein the hook member is at least partially received within a pocket on a muzzle end of the bolt and the hook member moves away from a center line of the bolt as the hook member is moved from the first position towards the second position, wherein a bottom of the pocket is recessed at least a first dimension within a first range A that is greater than 0.130 inches and less than 0.200 inches in a first direction from the muzzle end of the bolt and the hook member has an axial thickness parallel to the center line of the bolt within a first range A that is greater than 0.050 inches and less than 0.130 inches and wherein the hook member is flush with the muzzle end of the bolt when the hook member is in the second position.
F41C 27/00 - AccessoriesDetails or attachments not otherwise provided for
F41C 27/06 - Adaptations of smallarms for firing grenades, e.g. rifle grenades, or for firing riot-control ammunitionBarrel attachments therefor
F41A 15/00 - Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamberCartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun
A modular automatic or semiautomatic rifle. The rifle has a lower receiver assembly having a fire control assembly for firing the rifle. An upper receiver assembly is provided with a frame and a bolt carrier assembly configured for firing bullets of a predetermined caliber. The lower receiver has a mating interface configured for operably joining the lower receiver assembly to the upper receiver assembly, and for operably joining the lower receiver assembly to another upper receiver assembly different from the upper receiver assembly configured for firing bullets of the predetermined caliber. The other upper receiver assembly has a different frame and different bolt carrier assembly configured for firing bullets of a different predetermined caliber.
A direct gas impingement operating system for an automatic or semi-automatic rifle. The direct gas impingement operating system has a gas block fitted to a barrel having a bore, the gas block in communication with the bore. A gas sleeve is located in the gas block, the gas sleeve in communication with the bore through the gas block. A bolt assembly having an impingement cylinder and a gas line is fitted to the sleeve in communication with the bore through the sleeve and the gas block, the gas line further in fluid communication with the impingement cylinder. Gas discharged from a fired cartridge displaces the impingement cylinder displacing the bolt assembly. The sleeve and the gas line are removable from the gas block without removal of the gas block from the firearm.
F41A 5/24 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated by direct action of gas pressure on bolt or locking elements
9.
FIREARM HAVING A HYBRID INDIRECT GAS OPERATING SYSTEM
An automatic or semi-automatic rifle. The rifle has a receiver and a bolt having a striking surface, the bolt enclosed within the receiver. A barrel has a bore, the barrel coupled to the receiver. An indirect gas operating system has a cylinder and a piston, the indirect gas operating system mounted with a mounting structure substantially independent of the barrel. The cylinder is in communication with the bore, and the piston is fitted to the cylinder and disposed for striking the striking surface and displacing the bolt assembly.
An automatic or semiautomatic blackrifle type rifle having a receiver and a bolt carrier movably coupled to the receiver. An action system is connected to the bolt carrier for cycling the bolt carrier in the receiver. A folding butt stock is connected to the receiver, the folding butt stock being both foldable and collapsible.
A semi-automatic or automatic rifle is provided. The rifle has a receiver having a receiver frame, a barrel removably connected to the receiver frame, and an end cap coupled to the barrel. A removable hand guard section is provided extending over and generally surrounding the barrel, the removable hand guard section removably connected to the receiver. The removable hand guard section has a locating feature adapted to engage with the end cap and locate the hand guard relative to the end cap. The removable hand guard section has a mounting rail portion and a body portion, the mounting rail portion molded into the body portion. The barrel has a locking collar adapted to removably position and lock the removable hand guard section relative to the receiver frame and the barrel. The removable hand guard floats in position relative to the barrel.
An automatic or semiautomatic rifle having a receiver and a bolt carrier movably coupled to the receiver. An action system is connected to the bolt carrier for cycling the bolt carrier in the receiver. A receiver extension is connected to the receiver, at least part of the action system extending into the receiver extension. A folding stock is connected to the receiver. The receiver extension is located within the folding stock.
A semi-automatic or automatic rifle. The rifle has a receiver having a receiver frame, a barrel removably connected to the receiver frame and a cover coupled to the barrel. A removable hand guard section extends over and generally surrounds the barrel, the removable hand guard section removably connected to the receiver. The removable hand guard section has a locating feature adapted to engage with the cover and locate the hand guard relative to the cover. The barrel has a locking collar adapted to removably position and lock the removable hand guard section relative to the receiver frame and the barrel. The removable hand guard floats in position relative to the barrel.
An indirect gas operating system for an M4 type automatic or semi-automatic firearm. The indirect gas operating system has a gas block having a cylinder. The gas block is fitted to a barrel assembly having a bore with the cylinder in communication with the bore. A piston having a piston end and a striking end has the piston end fitted to the cylinder. A bolt assembly having a striking surface is provided. When a cartridge is fired, gas displaces the piston end and causes the striking end to strike the striking surface displacing the bolt assembly. The cylinder and the piston are together removable as an assembly from the firearm without removal of the gas block.
A rifle having a receiver with an integral hand guard and a barrel. The barrel is connected to the receiver. The hand guard extends over and surrounds the barrel. A removable hand guard is attached to the receiver by an attachment that stably holds the removable hand guard to the receiver. The attachment is arranged for allowing detachment and removal of the removable hand guard from the receiver without removal of fasteners.
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