A group of upwardly directed ports disposed in a barrel of a hand held firearm intermediate the chamber and the muzzle of the firearm vent propellant gasses upwardly upon discharge of the firearm to produce a downwardly directed component of thrust to counteract gun rise and muzzle jump. Preferably, the center of the group of ports is in the vicinity of midway between the chamber and the muzzle. The ports may be straight or tapered passages or they may be nozzles.
A compensator attachment for a pistol which is formed of an elongated housing within which is included a box-like internal chamber that is open to the bottom surface of the housing. The barrel and slide of the pistol is to be locatable within the internal chamber with the barrel connecting with a compensating chamber mounted in the front end of the housing. A gas discharge port arrangement connects with the compensating chamber with this port arrangement to eject gas expelled from the barrel to reduce the recoil of the pistol. The back end of the housing includes a threaded fastener which is to be used to tightly secure the housing to the aft end of the slide. The housing is to be quickly removable from the slide.
Thrust from a plurality of nozzles disposed between the chamber and nozzle of a gun provide a vertical component of force to counter muzzle jump and gun rise and a horizontal component of force to compensate for asymmetric support of the gun to increase the accuracy of subsequent shots and to reduce the time necessary to return the gun on target.
A firearm with muzzle noise reducer is disclosed with one or more barrels in which the bullets reach their final velocity in front of the barrel and a muzzle noise reducer constructed such that it can divert propellant gas upon reaching the final bullet velocity. This construction for diverting the propellant generally is in form of openings located length-wise in a barrel. The openings may have different forms and arrangements, e.g. an electronic and/or inertia-activated time-control element that controls the divergence of propellent gas. A method of reducing the muzzle noise is also disclosed.
A tubular shaped collar (22) of predetermined mass having internal threads (23) and an internal tapered area (21) which is threaded onto a tubular shaped insert (26) of flexible composition that has threads (44) that match the threads (23) of the collar and is tapered in a manner to match the taper (21) of the collar. The insert has a plural of longitudinal slits (25) in the tapered area. The insert is threaded into the collar and the collar and insert are slid over the muzzle end of a firearm barrel where they are locked in place by tightening the collar onto the insert whereby the predetermined angle of the taper (21) of the collar compresses the insert tightly against a firearm barrel. The insert and collar are adjustably positioned on the firearm barrel and held in place while being tightened by a tubular shaped tool (32) which has means of mating with the insert and has a means of calibration to determine the relative position of the collar and insert on a firearm barrel. The collar and insert are moved axially along the firearm barrel to a location whereby the predetermined mass of the collar will tune the harmonic vibrations of the firearm barrel and promote greater accuracy.
A barrel has an inner tube with a chamber at one end and a muzzle at the other. The barrel guides projectiles such as bullets as they are accelerated by a propellant. The inner tube has an aperture near its front end. Propellant passes through the aperture into a propellant chamber formed by the inner tube and an outer tube positioned about and secured to the inner tube. A plurality of ribs extend between the inner and outer tubes. Also, a coolant may be inserted into the propellant chamber to escape through the muzzle with the propellant after the projectile exits the muzzle.
