Firearm attachment

Patent metadata

Field	Value
Publication number	US-2016209153-A1
Application number	US-201614995634-A
Country	US
Kind code	A1
Filing date	Jan 14, 2016
Priority date	Jan 16, 2015
Publication date	Jul 21, 2016
Grant date	—

Abstract

Various embodiments are provided to implement an attachment for a firearm that operates as a flash hider, a muzzle brake, and/or to mount, e.g., a sound suppressor, to the firearm. In one example, a firearm attachment includes a base adapted to couple to a muzzle end of a barrel of a firearm. The firearm attachment includes a plurality of longitudinal tines that extend forward from the base. The base includes a plurality of apertures disposed rearward of the tines and that extend from a bore within the base through an outer circumfery of the firearm attachment. The apertures exhibit a first diameter at the bore and a second larger diameter at the outer circumfery. The apertures are adapted to impart thrust to the firearm attachment in response to combustion gases passed from the bore through the apertures to compensate for muzzle rise associated with the firearm.

First claim

1 . A firearm attachment, comprising:
a base adapted to couple to a muzzle end of a barrel of a firearm; a flash hider that extends forward from the base; wherein the base includes a plurality of apertures disposed rearward of the flash hider and that extend from a bore within the base through an outer circumfery of the firearm attachment; wherein the apertures exhibit a first diameter at the bore and a second larger diameter at the outer circumfery; and wherein the apertures are adapted to impart thrust to the firearm attachment in response to combustion gases passed from the bore through the apertures to compensate for muzzle rise associated with the firearm.

2 . The firearm attachment of claim 1 , wherein the apertures comprise a constriction portion proximate the bore and an expansion portion proximate the outer circumfery.

3 . The firearm attachment of claim 2 , wherein the constriction portion exhibits a substantially cylindrical cross-section and the expansion portion exhibits a substantially frusto-conical cross-section.

4 . The firearm attachment of claim 2 , wherein the first and second portions form a nozzle.

5 . The firearm attachment of claim 2 , wherein the expansion portion subtends at an angle of approximately 40 degrees, wherein the first diameter is in a range of approximately 0.062 inches to approximately 0.093 inches.

6 . The firearm attachment of claim 1 , wherein at least one of the apertures is concentric with an axis that is tilted forwardly at an acute angle relative to a central axis of the firearm attachment.

7 . The firearm attachment of claim 6 , wherein the acute angle is in a range of approximately 65 degrees to approximately 85 degrees.

8 . The firearm attachment of claim 1 , wherein the apertures are distributed in an arc about the outer circumfery of the firearm attachment.

9 . The firearm attachment of claim 1 , wherein the flash hider comprises a plurality of longitudinal tines are adapted to substantially hide at least a portion of a muzzle flash associated with the firearm.

10 . The firearm attachment of claim 1 , wherein:
the apertures are a first plurality of apertures; the base includes a second plurality of apertures disposed rearward of the flash hider tines and that extend from the bore through the outer circumfery of the firearm attachment; the second apertures exhibit the first diameter at the bore and the second larger diameter at the outer circumfery; and the apertures are adapted to impart thrust to the firearm attachment in response to combustion gases passed from the bore through the second apertures to compensate for muzzle pull associated with the firearm.

11 . A method comprising:
providing a firearm attachment comprising:
a base coupled to a muzzle end of a barrel of a firearm,
a flash hider that extends forward from the base,
wherein the base includes a plurality of apertures disposed rearward of the flash hider and that extend from a bore within the base through an outer circumfery of the attachment, and
wherein the apertures exhibit a first diameter at the bore and a second larger diameter at the outer circumfery; and
passing combustion gases of the firearm from the bore through the apertures to impart thrust to the attachment to compensate for muzzle rise associated with the firearm.

12 . The method of claim 11 , wherein the apertures comprise a constriction portion proximate the bore and an expansion portion proximate the outer circumfery.

13 . The method of claim 11 , wherein the constriction portion exhibits a substantially cylindrical cross-section and the expansion portion exhibits a substantially frusto-conical cross-section.

14 . The method of claim 11 , wherein the first and second portions form a nozzle.

15 . The method of claim 11 , wherein the expansion portion subtends at an angle of approximately 40 degrees, wherein the first diameter is in a range of approximately 0.062 inches to approximately 0.093 inches.

16 . The method of claim 11 , wherein at least one of the apertures is concentric with an axis that is tilted forwardly at an acute angle relative to a central axis of the attachment.

17 . The method of claim 11 , wherein the acute angle is in a range of approximately 65 degrees to approximately 85 degrees.

18 . The method of claim 11 , wherein the apertures are distributed in an arc about the outer circumfery of the attachment.

19 . The method of claim 11 , wherein the flash hider comprises a plurality of longitudinal tines adapted to substantially hide at least a portion of a muzzle flash associated with the firearm.

20 . The method of claim 11 , wherein:
the apertures are a first plurality of apertures; the base includes a second plurality of apertures disposed rearward of the flash hider and that extend from the bore through the outer circumfery of the attachment; the second apertures exhibit the first diameter at the bore and the second larger diameter at the outer circumfery; and the method further comprises passing combustion gases of the firearm from the bore through the second apertures to impart thrust to the attachment to compensate for muzzle pull associated with the firearm.

Assignees

• Surefire Llc

Inventors

• Dueck Barry W
• Voigt Michael
• Honigmann Karl R

Classifications

• F41A21/36 Primary

  for recoil reduction (recoil reduction arrangements in general F41A25/00){; Stabilisators; Compensators, e.g. for muzzle climb prevention} · CPC title

• F41A21/32 Primary

  Muzzle attachments or glands (F41A21/26, F41A21/30, F41A21/46 take precedence {; for projectile velocity measurements G01P3/665, G01P3/685}) · CPC title

• F41A21/34

  Flash dampers · CPC title