A conversion kit for a handgun is particularly suitable for converting a pistol into a pistol carbine. There is described the implementation of such a conversion kit, a conversion method and also a handgun that is converted in this way. The conversion kit for the handgun includes a housing. The housing is configured for establishing a connection to a frame of the handgun and for this purpose it has a linear guide for receiving the handgun frame.

A conversion kit for a handgun is particularly suitable for converting a pistol into a pistol carbine. There is described the implementation of such a conversion kit, a conversion method and also a handgun that is converted in this way. The conversion kit for the handgun includes a housing. The housing is configured for establishing a connection to a frame of the handgun and for this purpose it has a linear guide for receiving the handgun frame.

A firearm is provided comprising a body which defines a magazine well. The well has a rear wall and a first side wall integrated with the body. A front wall is detachable from the body and in part defining the well. Further a second side wall is detachable from the body and in part defining the well.

A firearm is provided comprising a body which defines a magazine well. The well has a rear wall and a first side wall integrated with the body. A front wall is detachable from the body and in part defining the well. Further a second side wall is detachable from the body and in part defining the well.

A modified assembly configured for firearm capable of propelling ammunition is disclosed. The modified assembly, in some embodiments, includes a firing control unit (“FCU”) and a grip module. The FCU is a serialized trigger mechanism capable of initiating a directional object when a trigger of the FCU is pulled. The grip module, in some aspects, includes a hand grip, FCU housing, and rear stabilizing connector wherein the FCU housing is configured to house a removable FCU. The rear stabilizing connector, for example, is capable of coupling to a rear attachment for enhancing stability of the modified assembly. In alternative embodiments, the modified assembly further includes a slide assembly, barrel, barrel block, bolt, and return spring situated in the vicinity of the FCU for facilitating object launching process.

A modified assembly configured for firearm capable of propelling ammunition is disclosed. The modified assembly, in some embodiments, includes a firing control unit (“FCU”) and a grip module. The FCU is a serialized trigger mechanism capable of initiating a directional object when a trigger of the FCU is pulled. The grip module, in some aspects, includes a hand grip, FCU housing, and rear stabilizing connector wherein the FCU housing is configured to house a removable FCU. The rear stabilizing connector, for example, is capable of coupling to a rear attachment for enhancing stability of the modified assembly. In alternative embodiments, the modified assembly further includes a slide assembly, barrel, barrel block, bolt, and return spring situated in the vicinity of the FCU for facilitating object launching process.

An upper receiver assembly of a firearm is disclosed. The upper receiver assembly contains a barrel, an extension block removably coupled with the barrel, an upper receiver removably coupled with the extension block, a handguard mounting block removably coupled with the barrel, and a handguard removably coupled with the handguard mounting block.

An upper receiver assembly of a firearm is disclosed. The upper receiver assembly contains a barrel, an extension block removably coupled with the barrel, an upper receiver removably coupled with the extension block, a handguard mounting block removably coupled with the barrel, and a handguard removably coupled with the handguard mounting block.

A link feed assembly. There is: a bolt carrier near a chamber of a modular weapon system; an infeed ramp, coupled to a first side of a weapon frame near the chamber; an outfeed ramp, coupled to a second side of the capon frame near the chamber and opposite the infeed ramp, positioned to form a space between the infeed ramp and the outfeed ramp; and a feed arm assembly coupled to the weapon frame and extending over the space between the infeed ramp and the outfeed ramp, the feed arm assembly functionally coupled to the bolt carrier such that cycling of the bolt carrier forward and backwards causes cycling of the feed arm assembly in a circuitous motion, the feed arm including a grabbing protrusion that is shaped to grab a top portion of a link during cycling of the feed arm assembly.

A three-component barrel system for a paintball gun uses a barrel back that threadably couples to the gun. A barrel tip is magnetically coupled to the barrel back. A barrel insert, through which the paintballs are actually fired, is received within the hollow interior formed by the coupled barrel back and barrel tip. The barrel insert has porting thereon as does the barrel tip the two sets of porting correspond with one another. A channel within the barrel tip slidably receives a peg on an exterior of the barrel insert in order to assure proper alignment between barrel tip and barrel insert. The bore of the barrel insert can taper outwardly in proceeding from its breach end to its muzzle end.