Abstract: A magazine extension is provided. The magazine extension includes a baseplate structured to receive a lower open end of a magazine, the baseplate having a laterally extending through-bore; a side bracket structured to couple to the baseplate for securing the magazine, the side bracket having a laterally extending through-bore; and a locking pin insertable within both the through-bore of the baseplate and the through-bore of the side bracket to lock the side bracket to the baseplate.

Abstract: A magazine extension is provided. The magazine extension includes a baseplate structured to receive a lower open end of a magazine, the baseplate having a laterally extending through-bore; a side bracket structured to couple to the baseplate for securing the magazine, the side bracket having a laterally extending through-bore; and a locking pin insertable within both the through-bore of the baseplate and the through-bore of the side bracket to lock the side bracket to the baseplate.

Abstract: A muzzle accessory for coupling to a firearm barrel, the firearm barrel including a chamber for receiving a firearm round, a firing tube extending distally from the chamber to a distal end of the firearm barrel, the muzzle accessory can comprise a main body having a proximal end, a distal end, a through-channel extending longitudinally between the proximal end and the distal end, and a keyed receptacle within the through-channel; and a lock coupled to the main body, the lock being positionable into an unlocked position to permit insertion of the distal end of the firearm barrel within the through-channel of the main body, the lock being further positionable into a locked position to prevent removal of the distal end of the firearm barrel from the main body after the firearm barrel is inserted into the through-channel.

Abstract: A muzzle accessory assembly is provided. The assembly includes a muzzle accessory having a main body with a proximal end, a distal end, a through-channel extending longitudinally between the proximal end and the distal end, a keyed receptacle within the through-channel, and a slot, and a lock within the slot of the main body, the lock being positionable into an unlocked position and a locked position; and a firearm barrel within the through-channel of the main body, the firearm barrel having a chamber for receiving a firearm round, a firing tube extending distally from the chamber, and a coupling engaging the keyed receptacle of the main body, in which the firearm barrel is removable from the through-channel of the main body when the lock is in the unlocked position, and the firearm barrel is locked longitudinally and rotationally within the through-channel of the main body when the lock is in the locked position.

Abstract: A muzzle accessory assembly is provided. The assembly includes a muzzle accessory having a main body with a proximal end, a distal end, a through-channel extending longitudinally between the proximal end and the distal end, a keyed receptacle within the through-channel, and a slot, and a lock within the slot of the main body, the lock being positionable into an unlocked position and a locked position; and a firearm barrel within the through-channel of the main body, the firearm barrel having a chamber for receiving a firearm round, a firing tube extending distally from the chamber, and a coupling engaging the keyed receptacle of the main body, in which the firearm barrel is removable from the through-channel of the main body when the lock is in the unlocked position, and the firearm barrel is locked longitudinally and rotationally within the through-channel of the main body when the lock is in the locked position.

Abstract: An accessorized firearm can include a firearm including a barrel having a main firing tube, the barrel provided with an alignment key; and a muzzle accessory including an accessory body having a through-channel and a surface provided with an alignment groove, the through-channel receiving the barrel of the firearm, the alignment groove receiving the alignment key, the alignment key rotationally fixing the muzzle accessory relative to the barrel.

Abstract: A muzzle accessory for installation on a barrel of a firearm is provided. The muzzle accessory includes an accessory body having a through-channel sized to receive the barrel of the firearm; and a locking member structured to engage the groove of the barrel to lock the muzzle accessory to the barrel.

Abstract: A muzzle accessory for installation on a barrel of a firearm is provided. The muzzle accessory includes an accessory body having a through-channel sized to receive the barrel of the firearm; and a locking member structured to engage the groove of the barrel to lock the muzzle accessory to the barrel.

Abstract: A magazine extension is provided. The magazine extension includes a baseplate structured to receive a lower open end of a magazine, the baseplate having a laterally extending through-bore; a side bracket structured to couple to the baseplate for securing the magazine, the side bracket having a laterally extending through-bore; and a locking pin insertable within both the through-bore of the baseplate and the through-bore of the side bracket to lock the side bracket to the baseplate.

Abstract: A magazine extender is provided. The magazine extender includes a baseplate structured to receive a lower open end of a magazine; a side bracket structured to couple to the baseplate for securing the magazine; and a locking pin selectively moveable into a locked position to lock the side bracket to the baseplate and an unlocked position to unlock the side bracket from the baseplate. The locking pin of the magazine extender is prevented from being moved to the unlocked position by a handgrip of a firearm when the magazine is inserted into the handgrip.