Muzzle attachment for improving firearm accuracy

A vibration dampening attachment for a firearm barrel of a type having a circumferentially continuous tubular muzzle, said attachment including a tubular weight attachable to the muzzle by a threaded connection such that the tubular weight can be rotated to adjust it in position axially along the muzzle, so as to change the effective weight applied for barrel vibration dampening purposes, and the improvement comprising:

• a tubular adapter attachable to the muzzle, said tubular attachment including fixed external threads and at least one first component of a detent;
• said tubular weight including an axial opening with internal threads which mate with said external threads, and at least one second component of a detent;
• wherein said first component of a the detent is an elongated axial groove formed in the external threads on the adapter;
• wherein said second component of the detent is a detent ball carried by the tubular weight and projecting radially inwardly from the internal threads of the tubular weight, each for entry into a said groove;
• wherein there is a plurality of at least one of said first and second components of the detent spaced circumferentially about the muzzle;
• wherein engagement of a detent ball within a groove holds the tubular weight into position relative to the muzzle;
• and
• wherein the first and second components of the detent provide for axial position adjustment of the tubular weight in discreet increments axially along the firearm barrel.

A vibration dampening attachment for a firearm barrel including a tubular weight attachable to the muzzle of the barrel by a threaded connection such that the tubular weight can be rotated to adjust it in position axially along the firearm barrel, so as to change the effective weight applied for dampening purposes, and the improvement comprising:

• a tubular adapter attachable to the muzzle of said firearm barrel,
• fixed external threads on the tubular adapter and a plurality of elongated axial grooves formed in the external threads and spaced circumferentially about the tubular adapter,
• said tubular adapter including first and second opposite end portions said first end portion including said threads and grooves and said second end portion includes a plurality of axial slits spaced circumferentially about the second end portion of the adapter, and axial fingers between the slits, also spaced axially around the second portion of the adapter, and a clamp ring surrounding said second end portion of the adapter for squeezing radially inwardly on said fingers for clamping the adapter onto the muzzle,
• wherein said clamp ring is a ring of a temperature change responsive material which shrinks when subjected to the appropriate change in its temperature, and wherein shrinkage of the ring clamps the adapter in place on the firearm barrel,
• said tubular weight including an axial opening with internal threads which mate with said external threads;
• and
• at least one detent ball carried by the tubular weight and projecting radially inwardly from the internal threads of the tubular weight, for entry into said grooves, one groove at a time, in response to the tubular weight being rotated,
• wherein engagement of the detent ball within a groove holds the tubular weight in position relative to the muzzle, and
• wherein said detent ball and grooves provide for an axial position adjustment of the tubular weight in discreet increments along the barrel.

A vibration dampening attachment for a firearm barrel including a tubular weight attachable to the muzzle of the barrel by a threaded connection such that the tubular weight can be rotated to adjust it in position axially along the firearm barrel, so as to change the effective weight applied for dampening purposes, and the improvement comprising:

• a tubular adaptor attachable to the muzzle,
• fixed external threads on the tubular adapter and a plurality of elongated axial grooves formed in the external threads and spaced circumferentially about the tubular adapter,
• said tubular weight including an axial opening with internal threads which mate with said external threads,
• said tubular adapter includes first and second opposite end portions, said first end portion including said threads and said grooves, and said second end portion includes a plurality of circumferentially space apart axial slits, and axial fingers between the slits, said tubular adapter also including a clamp ring surrounding said second end portion, said clamp ring clamping the adapter onto the muzzle by squeezing radially inwardly on said fingers;
• wherein said clamp ring is a ring of temperature change responsive material which shrinks when subjected to the appropriate change of its temperature, and wherein shrinkage of the clamp ring clamps the adapter in place on the muzzle;
• and
• at least one detent ball carried by the tubular weight and projecting radially inwardly from the internal threads of the tubular weight, for entry into said grooves, one groove at a time, in response to the tubular weight being rotated,
• wherein engagement of the detent ball within a groove holds the tubular weight in position relative to the muzzle, and
• wherein said detent ball and grooves provide for an axial position adjustment of the tubular weight in discreet increments along the barrel.

A vibration dampening attachment for a firearm barrel including a tubular weight attachable to the muzzle of the barrel by a threaded connection such that the tubular weight can be rotated to adjust it in position axially along the firearm barrel, so as to change the effective weight applied for dampening purposes, and the improvement comprising:

• a tubular adaptor attachable to the muzzle;
• fixed external threads on the tubular adapter;
• said tubular weight including an axial opening with internal threads which mate with said external threads;
• and
• said tubular adapter includes first and second opposite end portions, said first end portion including said threads, and said second end portion includes a plurality of circumferentially space apart axial slits, and axial fingers between the slits, said tubular adapter also including a clamp ring surrounding said second end portion, said clamp ring clamping the adapter onto the muzzle by squeezing radially inwardly on said fingers,
• wherein said clamp ring is a ring of temperature change responsive material which shrinks when subjected to the appropriate change of its temperature, and wherein shrinkage of the clamp ring clamps the adapter in place on the muzzle, and
• wherein said tubular weight is rotated on the threads to provide for an axial position adjustment of the tubular weight along the barrel.