A blaster for shooting projectiles that includes a housing that defines a housing interior, and a variable velocity barrel assembly positioned in the housing interior. The variable velocity barrel assembly includes a barrel that defines a barrel axis and a barrel interior. The barrel includes an exit opening at a distal end thereof. At least a first opening communicates the barrel interior with an exterior of the barrel. The first opening is defined through a side wall of the barrel. A slider member that includes a cylindrical portion that surrounds the barrel is movable axially along the barrel between a maximum velocity position where the cylindrical portion covers the first opening and a minimum velocity position where the slider member does not cover the first opening.

An upper receiver assembly for a firearm having an upper receiver with an integral barrel nut, a handguard assembly and a barrel nut assembly with a barrel and lock nut is provided. The barrel is received by the upper receiver and is secured directly to the upper receiver using the lock nut. The upper receiver also includes an integral handguard mounting member to which the handguard assembly may be directly attached. The upper receiver assembly allows the user to attach both the barrel and handguard assemblies directly to the upper receiver, independently of one another.

An upper receiver assembly for a firearm having an upper receiver with an integral barrel nut, a handguard assembly and a barrel nut assembly with a barrel and lock nut is provided. The barrel is received by the upper receiver and is secured directly to the upper receiver using the lock nut. The upper receiver also includes an integral handguard mounting member to which the handguard assembly may be directly attached. The upper receiver assembly allows the user to attach both the barrel and handguard assemblies directly to the upper receiver, independently of one another.

A firearm training barrel for a replica gun, the gun having a slide and a magazine with a follower. The barrel includes an extended or extendable member positioned or positionable to simulate the presence of one or more pellets in the magazine, whereby the replica gun can be fired even after the magazine's follower has reached the top of the magazine.

A firearm training barrel for a replica gun, the gun having a slide and a magazine with a follower. The barrel includes an extended or extendable member positioned or positionable to simulate the presence of one or more pellets in the magazine, whereby the replica gun can be fired even after the magazine's follower has reached the top of the magazine.

A shell loading system for a firearm in one embodiment includes a barrel, receiver, reciprocating slide and bolt assembly, tubular magazine, carrier operable to receive and feed shells from the magazine into the action, a spring-biased carrier latch laterally moveable to engage the carrier, and a pawl pivotably mounted on the carrier. A carrier latch disconnect is also pivotably mounted to the carrier and operated by the pawl. The carrier latch disconnect and pawl are movable independently of each other in one embodiment. The carrier latch disconnect is operable to block the carrier latch from engaging the carrier in a first position. In a second position when activated by the pawl, the carrier latch disconnect releases the carrier latch to engage the carrier which is locked in a downward position to receive a shell from the magazine.

A shell loading system for a firearm in one embodiment includes a barrel, receiver, reciprocating slide and bolt assembly, tubular magazine, carrier operable to receive and feed shells from the magazine into the action, a spring-biased carrier latch laterally moveable to engage the carrier, and a pawl pivotably mounted on the carrier. A carrier latch disconnect is also pivotably mounted to the carrier and operated by the pawl. The carrier latch disconnect and pawl are movable independently of each other in one embodiment. The carrier latch disconnect is operable to block the carrier latch from engaging the carrier in a first position. In a second position when activated by the pawl, the carrier latch disconnect releases the carrier latch to engage the carrier which is locked in a downward position to receive a shell from the magazine.

A gun barrel assembly includes an outer barrel tube, an inner barrel liner, a barrel breech cap and a barrel muzzle cap. The barrel tube and the barrel liner each longitudinally extend from a muzzle end to a breech end, and have axial through bores, with the barrel liner being disposed within and coaxial with the barrel tube bore. The breech cap and the muzzle cap each longitudinally extend from a front end to a rear end and have through axial through bores. The breech cap is mounted to the barrel liner breech end portion and contacts the barrel tube breech end. The muzzle cap is mounted to the barrel liner muzzle end portion and contacts the barrel tube muzzle end. The inside diameter of the barrel tube bore is greater than the outside diameter of the barrel liner whereby the barrel tube does not contact the barrel liner.

A gun barrel unit for a toy gun includes: an inner barrel and an outer barrel, the inner barrel is axially inserted in the outer barrel, at least one rotary member is provided between the inner and outer barrels to allow for rotation of the inner barrel with respect to the outer barrel, and at least one eccentric weight is fixed in the inner barrel. The inner barrel is pivotable and the inner barrel is provided with the eccentric weight, so that even when the gun is held in an inclined position, the inner barrel still can return to a non-inclined manner to ensure the ballistic trajectory stability when firing. Besides, an engaging assembly is provided at the rear end of the inner barrel, so that the inner barrel can still be fixed to the outer barrel in a fixed manner to facilitate ballistic trajectory adjustment.

A semiautomatic firearm is presented that is a combination of known parts from the AR-15 style firearms and AK-47 style firearms and new parts. The firearm includes a receiver and a removable trunnion inserted into the receiver. A barrel is threaded and pinned into the trunnion and an adjustable gas block is connected to the barrel. The gas block includes a gas bore and an adjustable member that extends into and out of the gas bore thereby adjusting the amount of gases that travel through the gas block. The firearm also includes a foregrip installed over the barrel and gas block. The foregrip has a pattern of venting openings therein and an opening that provides access to the adjustable member of the gas block as well as a top rail and a bottom rail. The combination of these components provides a semiautomatic firearm that operates smoothly while being rugged and durable.