A system and method for attaching a muzzle attachment to a firearm. The muzzle attachment has an attachment body that is defined by an inner surface having a bore along the central axis of the muzzle attachment. The attachment body may include a threaded portion extending a length along the inner surface configured to engage a threaded portion of the firearm. The attachment body includes a lock that is configurable from a retracted configuration to an extended configuration. In the extended configuration, the lock is configured to securely engage a recess of the firearm. By threading the muzzle attachment onto the firearm and engaging the lock with the recess, the muzzle attachment system resists removal of the muzzle attachment from the firearm. The muzzle attachment may include vents. The muzzle attachment system preferably is indexed relative to the firearm for proper operation of the muzzle attachment during engagement of the lock.

An adjustable tuning device includes an externally threaded mounting member having a base defining an aperture and a tuning weight having internal threads configured to mate with the externally threaded mounting member. The aperture can be configured to receive a forward portion of a gun such that a threaded protrusion extends forward of the base. The mounting member can have a rear surface configured to abut a forward-facing shoulder of the gun. The tuning weight is rotatable about the mounting member to move in a range of axial positions with respect to the mounting member and a barrel axis. The mounting member can have a skirt extending from the base. The mounting member can have an external diameter at an externally threaded portion, and the tuning weight can have a rear portion with an internal diameter less than the external diameter of the mounting member.

An assembly is configured for retaining a muzzle accessory mounted on a firearm barrel or to a muzzle adapter on the barrel, where the muzzle accessory has a mount with female threads on an inside and male threads on an outside of the mount. The outside of the muzzle adapter has male threads and a bearing surface. A locking nut has inner female threads and an inside taper located proximally of the female threads. A locking ring has a tapered outside face configured to engage the inside taper of the locking nut and an inside face configured to engage the bearing surface. When assembled, the mount is threaded onto the muzzle adapter and the locking nut is threaded onto the accessory mount with the locking ring engaging the bearing surface of the muzzle adapter and the inside taper of the locking nut.

An exciter is adaptable for use with airsoft guns to excite red tracer BBs. The exciter comprises a tube and an adapter for coupling said tube to the muzzle of the guns. The exciter also comprises a blue tracer light source supported adjacent said tube. The light source being arranged to emit light into said tube.

An apparatus for stabilizing firearms is disclosed. The apparatus comprises a body having a left side module and a right side module secured together by a combination of locking mechanisms. An extendable rail with a support brace provided at the rear end is connected to the body of the apparatus. Further, a back securement disposed at the bottom side of the body, wherein the back securement is connected to the left side module of the body using a first side securement and the right side module of the body using a second side securement. Furthermore, a key for locking the extendable rail in a plurality of configurations is provided. Herein, the key is inserted through one or more keyholes provided in the extendable rail and a socket provided at the rear end of the body.

A firearm suppressor is provided, including a tubular core, a baffle carried within the core, and a tubular mount. The core may be integral with the mount, attached end-to-end to the mount, or connected to the mount such that the mount is rotationally locked relative to the core but movable axially. The firearm suppressor further includes an inner attachment threading and/or an outer attachment threading at its upstream end for connecting the firearm suppressor to threads of a firearm barrel muzzle or indirect attachment device. The firearm suppressor includes at least one recessed groove annular to a perimeter of either the inner surface of the tubular mount between the upstream and downstream ends of the inner attachment threading or the outer surface of the tubular mount between upstream and downstream ends of the outer attachment threading, and at least one compressible annulus residing within the at least one recessed groove.

A modular firearm muzzle attachment system provides for customizing muzzle attachment characteristics by assembling selectable muzzle attachment components corresponding to desired characteristics. The system includes a plurality of internal connectors engageable together in series in a selectable order to form an internal assembly having a conduit defined by channels extending through each internal connector coupled together to form the internal assembly. Each of the internal connectors is individually structured to have associated characteristics. Each of a plurality of shrouds is couplable to a selectable one of the internal connectors of the internal assembly such that the internal assembly extends through the plurality of shrouds to define a muzzle attachment configured for coupling to a firearm.

An adjustable tuning device includes an externally threaded mounting member having a base defining an aperture and a tuning weight having internal threads configured to mate with the externally threaded mounting member. The aperture can be configured to receive a forward portion of a gun such that a threaded protrusion extends forward of the base. The mounting member can have a rear surface configured to abut a forward-facing shoulder of the gun. The tuning weight is rotatable about the mounting member to move in a range of axial positions with respect to the mounting member and a barrel axis. The mounting member can have a skirt extending from the base. The mounting member can have an external diameter at an externally threaded portion, and the tuning weight can have a rear portion with an internal diameter less than the external diameter of the mounting member.

A Glock compensator integral with a barrel, and a slide assembly allow escaping gases to dampen recoil associated with firing a Glock firearm. The Glock barrel is removed from the front of the firearm allowing for the integrated compensator at the front of the firearm. Various features, including a lock design, debris port, swept back side ports, height offset, nose ring design and mass-reducing rear cutout, result in an efficient and effective integrated compensator suitable for 4.sup.th and 5.sup.th generation Glock firearms. The compensator and barrel may be fabricated from the same piece of billet. A pair of side rails may be positioned and configured to slidably receive a slide assembly.

An assembly is configured for retaining a muzzle accessory mounted on a firearm barrel or to a muzzle adapter on the barrel, where the muzzle accessory has a mount with female threads on an inside and male threads on an outside of the mount. The outside of the muzzle adapter has male threads and a bearing surface. A locking nut has inner female threads and an inside taper located proximally of the female threads. A locking ring has a tapered outside face configured to engage the inside taper of the locking nut and an inside face configured to engage the bearing surface. When assembled, the mount is threaded onto the muzzle adapter and the locking nut is threaded onto the accessory mount with the locking ring engaging the bearing surface of the muzzle adapter and the inside taper of the locking nut.