US2712193A - Shot gun muzzle device - Google Patents

Shot gun muzzle device Download PDF

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Publication number
US2712193A
US2712193A US224425A US22442551A US2712193A US 2712193 A US2712193 A US 2712193A US 224425 A US224425 A US 224425A US 22442551 A US22442551 A US 22442551A US 2712193 A US2712193 A US 2712193A
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barrel
sleeve
neck
collar
threaded
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Expired - Lifetime
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US224425A
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William F Mathis
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/32—Muzzle attachments or glands
    • F41A21/40—Chokes for shotguns, e.g. automatic chokes
    • F41A21/42—Chokes for shotguns, e.g. automatic chokes manually adjustable

Definitions

  • the mechanism being readily adjustable and being retained securely in proper place on the gun barrel, the choke of the present invention materially reducing recoil and noise, and enabling full control of pattern.
  • a further object of the invention is to provide a shot gun choke control which is extremely simple and inexpensive to manufacture.
  • Figure l is a fragmentary side elevational view of the shot gun barrel, with the adjustable choke mechanism of the present invention thereon;
  • Figure 2 is a longitudinal sectional view taken through the assembly of Figure 1;
  • FIG. 3 is a sectional view taken on the line 3-3 of Figure 2;
  • Figure 4 is a sectional view taken on the line 4-4 of Figure 2.
  • the numeral 10 designates the front portion of a shot gun barrel which is provided with a plurality of longitudinally extending,
  • a front sight 9 is secured on the barrel 1i) and the present invention is directed to an adjustable choke mechanism for choking the end of the shot gun barrel 10.
  • the choke mechanism of the present invention includes a sleeve 14 that is cylindrical in shape and is arranged over the barrel 10, the sleeve 14 being provided with a plurality of holes or openings 15.
  • the barrel 10 is provided with a plurality of rearwardly inclined or extending slots 12 for the passage therethrough of gas after the gun has been discharged.
  • the mechanism further includes a collar 16 which is annular and which is arranged in surrounding relation with respect to the barrel 10, the collar 16 being arranged rearwardly of the sleeve 14.
  • the collar 16 is provided with a neck 17 of reduced diameter, and the neck 17 is threaded exteriorly, as best seen in Figure 2. Extending forwardly from the neck 17 and secured thereto or formed integrally therewith is a tapered portion 18 which is also threaded exteriorly.
  • the tapered portion 18 is provided with a plurality of 7 spaced slits 19, Figure 3, and a suitable securing element such as the nut 20 is arranged in threaded engagement with the tapered portion 18, so as to clamp the collar 16 securely in place on the barrel 10.
  • the rear end of the sleeve 14 is provided with an interiorly threaded section 21 that is arranged in threaded engagement with the neck 17. Also, threadedly engaging the neck 17 is a locking sleeve or locking ring 22 of annular shape.
  • the sleeve 22 is knurled exteriorly, as at 23, and the sleeve 22 includes an annular interiorly threaded flange 24 that is arranged in engagement with the neck 17.
  • the collar 16 is provided with suitable markings, or a scale, 25, therein, Figure 1, so that the choke mechanism can be adjusted accurately as desired and locked in place.
  • the choke mechanism of the present invention further includes an internally tapered compression nipple 26 which is provided with a shoulder 27 of reduced diameter, the shoulder 27 being threaded exteriorly.
  • the front end 23 of the sleeve 14 is threaded interiorly, and the front end 23 threadedly engages the shoulder 27.
  • the locking ring 22 can be rotated or turned until the locking ring is at the desired position on the neck 17, as indicated by the scale markings 25. Then, the sleeve 14 can be rotated until it abuts the flange 24, so that the choke can be adjusted as desired.
  • the sportsman will be able to quickly change or adjust the choke so that split patterns can be eliminated as well as blown patterns.
  • the pattern By rotating the sleeve 14, the pattern will be changed.
  • An arrow may be arranged on the exterior of the sleeve 14 for indicating when the sleeve 14 is in the proper aligned position.
  • the ring 22 will prevent accidental movement of the sleeve 14, the ring 22 coacting with the nipple 26. It has been found that the rearwardly extending or inclined slots 12 are most effective for reducing recoil and providing a part of the choke mechanism. Further, the slope or inclination of the slots 12 will insure that the wads or shot lead will not be stripped as they pass through the barrel 10.
  • these slots 12 allow the gas to pass therethrough as the load moves out of the barrel, and this gas backs up in the sleeve 14 and reduces recoil.
  • the nipple 26 serves to prevent the end of the barrel 10 from expanding, as when the barrel becomes overheated.
  • the ring 22 helps maintain the parts immobile in their varied adjusted positions, and the collar 16 serves to lock the mechanism onto the barrel 10.
  • the mechanism of the present invention does not need to be welded, brazed, or otherwise secured to the barrel 1i and this is advantageous because such welding or brazing operations usually are harmful to the barrel. Further, the mechanism can be readily removed or replaced on the barrel 1!) when desired without hurting the barrel, and the nut 20, which is arranged in threaded engagement with the tapered portion 18 will prevent accidental shifting of the collar 16 on the barrel 10.
  • a barrel there being a plurality of spaced parallel slots in said barrel extending angularly with respect to the longitudinal axis of said barrel, an annular collar surrounding said barrel and provided with an annular neck of reduced diameter, said neck being threaded exteriorly, an annular tapered slit portion projecting forwardly from said neck, a securing element positioned in threaded engagement with said slit portion for clamping the collar in place, a cylindrical sleeve provided with a plurality of spaced openings rotatably mounted on said barrel, said sleeve having a portion threadedly engaging the threaded neck, and an exteriorly knurled annular ring positioned in threaded engagement with said neck, said sleeve and collar having the same outside diameter, said ring being of greater diameter than said collar and sleeve and overlapping the collar and sleeve, said ring further including an inwardly projecting annular fiange interposed between said collar and sleeve
  • a barrel there being a plurality of slots in said barrel, a collar surrounding said barrel and provided with a neck of reduced diameter, said neck being threaded exteriorly, an annular slit portion projecting forwardly from said neck, a securing element positioned in threaded engagement with said slit portion for clamping the collar in place, a sleeve provided with a plurality of spaced openings rotatably mounted on said barrel, said sleeve having a portion threadedly engaging the threaded neck, an annular ring positioned in threaded engagement with said neck, said ring being of greater diameter than said collar and sleeve and overlapping the collar and sleeve, said ring further including a flange interposed between said collar and sleeve and threadedly engaging said neck, said slots being spaced from the end of the barrel and being surrounded by that portion of the sleeve having the openings therein.

Description

July 5, 1955 w. F. MATHIS SHOT GUN MUZZLE DEVICE Filed May 5, 1951 m5 m 5 A N M F M. A u w w ATTD RN EYS HGT GUN MUZZLE DEVICE Wiiiinrn F. Mathis, Hoiiywood, Calif.
Application May 3, 1951, Serial No. 224,425
2 Claims. (or. 42-49 gun choking mechanism which will enable the gases to :1
escape when the gun is fired, the mechanism being readily adjustable and being retained securely in proper place on the gun barrel, the choke of the present invention materially reducing recoil and noise, and enabling full control of pattern.
A further object of the invention is to provide a shot gun choke control which is extremely simple and inexpensive to manufacture.
Other objects and advantages will be apparent during the course of the following description.
ln the accompanying drawings forming a part of this application, and in which like numerals are used to designate like parts throughout the same:
Figure l is a fragmentary side elevational view of the shot gun barrel, with the adjustable choke mechanism of the present invention thereon;
Figure 2 is a longitudinal sectional view taken through the assembly of Figure 1;
Figure 3 is a sectional view taken on the line 3-3 of Figure 2; 1,
Figure 4 is a sectional view taken on the line 4-4 of Figure 2.
Referring in detail to the drawings, the numeral 10 designates the front portion of a shot gun barrel which is provided with a plurality of longitudinally extending,
spaced, parallel slits 11 on its front end. A front sight 9 is secured on the barrel 1i) and the present invention is directed to an adjustable choke mechanism for choking the end of the shot gun barrel 10.
The choke mechanism of the present invention includes a sleeve 14 that is cylindrical in shape and is arranged over the barrel 10, the sleeve 14 being provided with a plurality of holes or openings 15. The barrel 10 is provided with a plurality of rearwardly inclined or extending slots 12 for the passage therethrough of gas after the gun has been discharged. The mechanism further includes a collar 16 which is annular and which is arranged in surrounding relation with respect to the barrel 10, the collar 16 being arranged rearwardly of the sleeve 14.
The collar 16 is provided with a neck 17 of reduced diameter, and the neck 17 is threaded exteriorly, as best seen in Figure 2. Extending forwardly from the neck 17 and secured thereto or formed integrally therewith is a tapered portion 18 which is also threaded exteriorly. The tapered portion 18 is provided with a plurality of 7 spaced slits 19, Figure 3, and a suitable securing element such as the nut 20 is arranged in threaded engagement with the tapered portion 18, so as to clamp the collar 16 securely in place on the barrel 10.
The rear end of the sleeve 14 is provided with an interiorly threaded section 21 that is arranged in threaded engagement with the neck 17. Also, threadedly engaging the neck 17 is a locking sleeve or locking ring 22 of annular shape. The sleeve 22 is knurled exteriorly, as at 23, and the sleeve 22 includes an annular interiorly threaded flange 24 that is arranged in engagement with the neck 17. The collar 16 is provided with suitable markings, or a scale, 25, therein, Figure 1, so that the choke mechanism can be adjusted accurately as desired and locked in place.
The choke mechanism of the present invention further includes an internally tapered compression nipple 26 which is provided with a shoulder 27 of reduced diameter, the shoulder 27 being threaded exteriorly. The front end 23 of the sleeve 14 is threaded interiorly, and the front end 23 threadedly engages the shoulder 27.
In use, the locking ring 22 can be rotated or turned until the locking ring is at the desired position on the neck 17, as indicated by the scale markings 25. Then, the sleeve 14 can be rotated until it abuts the flange 24, so that the choke can be adjusted as desired.
By means of the mechanism of the present invention, the sportsman will be able to quickly change or adjust the choke so that split patterns can be eliminated as well as blown patterns. By rotating the sleeve 14, the pattern will be changed. An arrow may be arranged on the exterior of the sleeve 14 for indicating when the sleeve 14 is in the proper aligned position. The ring 22 will prevent accidental movement of the sleeve 14, the ring 22 coacting with the nipple 26. It has been found that the rearwardly extending or inclined slots 12 are most effective for reducing recoil and providing a part of the choke mechanism. Further, the slope or inclination of the slots 12 will insure that the wads or shot lead will not be stripped as they pass through the barrel 10. Further, these slots 12 allow the gas to pass therethrough as the load moves out of the barrel, and this gas backs up in the sleeve 14 and reduces recoil. The nipple 26 serves to prevent the end of the barrel 10 from expanding, as when the barrel becomes overheated. The ring 22 helps maintain the parts immobile in their varied adjusted positions, and the collar 16 serves to lock the mechanism onto the barrel 10.
The mechanism of the present invention does not need to be welded, brazed, or otherwise secured to the barrel 1i and this is advantageous because such welding or brazing operations usually are harmful to the barrel. Further, the mechanism can be readily removed or replaced on the barrel 1!) when desired without hurting the barrel, and the nut 20, which is arranged in threaded engagement with the tapered portion 18 will prevent accidental shifting of the collar 16 on the barrel 10.
What is claimed is:
1. In a shot gun, a barrel, there being a plurality of spaced parallel slots in said barrel extending angularly with respect to the longitudinal axis of said barrel, an annular collar surrounding said barrel and provided with an annular neck of reduced diameter, said neck being threaded exteriorly, an annular tapered slit portion projecting forwardly from said neck, a securing element positioned in threaded engagement with said slit portion for clamping the collar in place, a cylindrical sleeve provided with a plurality of spaced openings rotatably mounted on said barrel, said sleeve having a portion threadedly engaging the threaded neck, and an exteriorly knurled annular ring positioned in threaded engagement with said neck, said sleeve and collar having the same outside diameter, said ring being of greater diameter than said collar and sleeve and overlapping the collar and sleeve, said ring further including an inwardly projecting annular fiange interposed between said collar and sleeve and threadedly engaging said neck, said slots being spaced from the end of the barrel and being surrounded by that portion of the sleeve having the openings therein.
2. In a shot gun, a barrel, there being a plurality of slots in said barrel, a collar surrounding said barrel and provided with a neck of reduced diameter, said neck being threaded exteriorly, an annular slit portion projecting forwardly from said neck, a securing element positioned in threaded engagement with said slit portion for clamping the collar in place, a sleeve provided with a plurality of spaced openings rotatably mounted on said barrel, said sleeve having a portion threadedly engaging the threaded neck, an annular ring positioned in threaded engagement with said neck, said ring being of greater diameter than said collar and sleeve and overlapping the collar and sleeve, said ring further including a flange interposed between said collar and sleeve and threadedly engaging said neck, said slots being spaced from the end of the barrel and being surrounded by that portion of the sleeve having the openings therein.
References Cited in the file of this patent UNlTED STATES PATENTS 785,975 McClean Mar. 28, 1905 2,428,232 Lirnon Sept. 30, 1947 2,442.899 McAllister June 8, 1948 2,453,747 Egleson Nov. 16, 1948 2,466,104 Hilburn Apr. 5, 1949 2,558,200 Schmeling June 26, 1951 2,589,738 Sedberry Mar. 18, 1952 2,662,326 Powell Dec. 15, 1953
US224425A 1951-05-03 1951-05-03 Shot gun muzzle device Expired - Lifetime US2712193A (en)

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Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029540A (en) * 1960-07-25 1962-04-17 Frank A Pachmayr Gun choke mounting apparatus
US3408762A (en) * 1966-01-29 1968-11-05 Durao Americo Choke for shotguns
US5020416A (en) * 1988-03-02 1991-06-04 Pantera Armory, Inc. Muzzle brake for firearms
US5279200A (en) * 1992-07-13 1994-01-18 Browning Ballistic optimizing system for rifles
US5425298A (en) * 1994-02-23 1995-06-20 Challenger International Ltd. Adjustable muzzle brake for a firearm
US5509345A (en) * 1994-01-26 1996-04-23 Cyktich; James M. Muzzle attachment for improving firearm accuracy
US5698810A (en) * 1995-11-29 1997-12-16 Browning Arms Company Convertible ballistic optimizing system
US5798473A (en) * 1997-04-30 1998-08-25 Roblyer; Steven Harmonic optimization system for rifles
US5814757A (en) * 1996-07-15 1998-09-29 Buss; Richard A. Muzzle brake
US6223458B1 (en) 1997-04-30 2001-05-01 Kevin Schwinkendorf Harmonic optimization technology
US6308609B1 (en) 1998-12-08 2001-10-30 Robert Bruce Davies Suppressor
US6557290B2 (en) 2000-12-28 2003-05-06 Daniel F. Kumler Adjustable shotgun choke
US6604445B2 (en) * 2001-02-28 2003-08-12 Nicolae Radu Sevastian Gas trap (GT) compensator
US20030154849A1 (en) * 2002-02-21 2003-08-21 Heinz-Gunter Breuer Gun barrel having a muzzle brake
US20040154208A1 (en) * 2003-02-12 2004-08-12 Walker Ronald N. Breeching tool
US20050066954A1 (en) * 2003-09-12 2005-03-31 Williams Dan E. Paintball gun barrel with compression chamber
US20050115394A1 (en) * 2003-11-06 2005-06-02 Surefire, Llc System for attaching a noise suppressor to a firearm
US20050262997A1 (en) * 2004-01-20 2005-12-01 John Brixius Gun barrel assembly
US20060060076A1 (en) * 2003-11-06 2006-03-23 Surefire, Llc (A California Limited Liability Company) Systems for attaching a noise suppressor to a firearm
DE102008036503A1 (en) * 2008-08-05 2010-02-11 Christoph Fuchs Device for reduction of backstroke in shotgun, has muzzle brake housing screwed with chocks on shot gun opening, and gas outlet boreholes provided in connection with dynamic stock caps and attached to transverse -and longitudinal axis
US7895787B1 (en) * 2008-01-11 2011-03-01 Andry Mark L Porting feature for firearm
US20110252952A1 (en) * 2010-04-17 2011-10-20 Mcneill Robert Adjustable Muzzle Brake
US8973481B2 (en) 2003-11-06 2015-03-10 Surefire, Llc Firearm sound suppressor
US9163891B1 (en) * 2014-09-04 2015-10-20 Law Enforcement International Ltd Flash hider for firearm suppressor
US20160334181A1 (en) * 2015-05-15 2016-11-17 James E. Bennington Tuner system and method for rifles
US9709355B2 (en) * 2014-12-15 2017-07-18 Jered S. Joplin Recoil compensator for firearm
US9797672B2 (en) * 2015-01-17 2017-10-24 Brian Wilson Tunable muzzle compensator for a firearm
US10036605B1 (en) * 2017-04-06 2018-07-31 Kurt A. Kosman Adjustable muzzle device
US10082354B1 (en) * 2018-02-21 2018-09-25 Darryl S. Lee Firearm suppressor adapter for barrels having obstructions
WO2018172805A1 (en) * 2017-03-24 2018-09-27 Palocska Janos Muzzle brake for guns
US11098971B2 (en) * 2019-03-12 2021-08-24 Highland Canyon Company, Inc. Muzzle brake
US20210404760A1 (en) * 2020-06-02 2021-12-30 Aaron Hipp Adjustable tuning device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US785975A (en) * 1904-07-01 1905-03-28 Samuel N Mcclean Means for controlling the recoil and muzzle-blast of guns.
US2428232A (en) * 1944-05-25 1947-09-30 Joseph J Limon Shotgun choke
US2442899A (en) * 1946-04-08 1948-06-08 William H Mcallister Choke attachment for gun barrels
US2453747A (en) * 1947-10-31 1948-11-16 James E A Egleson Shotgun choke
US2466104A (en) * 1947-06-27 1949-04-05 Joseph C Hilburn Variable gun choke
US2558200A (en) * 1946-01-29 1951-06-26 William F Schmeling Shotgun choke
US2589738A (en) * 1950-01-13 1952-03-18 William H Sedberry Variable selective automatic choke for shotguns
US2662326A (en) * 1948-12-18 1953-12-15 Powell Edward Baden Shotgun muzzle device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US785975A (en) * 1904-07-01 1905-03-28 Samuel N Mcclean Means for controlling the recoil and muzzle-blast of guns.
US2428232A (en) * 1944-05-25 1947-09-30 Joseph J Limon Shotgun choke
US2558200A (en) * 1946-01-29 1951-06-26 William F Schmeling Shotgun choke
US2442899A (en) * 1946-04-08 1948-06-08 William H Mcallister Choke attachment for gun barrels
US2466104A (en) * 1947-06-27 1949-04-05 Joseph C Hilburn Variable gun choke
US2453747A (en) * 1947-10-31 1948-11-16 James E A Egleson Shotgun choke
US2662326A (en) * 1948-12-18 1953-12-15 Powell Edward Baden Shotgun muzzle device
US2589738A (en) * 1950-01-13 1952-03-18 William H Sedberry Variable selective automatic choke for shotguns

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029540A (en) * 1960-07-25 1962-04-17 Frank A Pachmayr Gun choke mounting apparatus
US3408762A (en) * 1966-01-29 1968-11-05 Durao Americo Choke for shotguns
US5020416A (en) * 1988-03-02 1991-06-04 Pantera Armory, Inc. Muzzle brake for firearms
US5279200A (en) * 1992-07-13 1994-01-18 Browning Ballistic optimizing system for rifles
EP0579306A1 (en) * 1992-07-13 1994-01-19 Browning S.A. Ballistic optimizing system for rifles
USRE35381E (en) * 1992-07-13 1996-11-26 Browning Ballistic optimizing system for rifles
US5509345A (en) * 1994-01-26 1996-04-23 Cyktich; James M. Muzzle attachment for improving firearm accuracy
US5425298A (en) * 1994-02-23 1995-06-20 Challenger International Ltd. Adjustable muzzle brake for a firearm
US5698810A (en) * 1995-11-29 1997-12-16 Browning Arms Company Convertible ballistic optimizing system
US5814757A (en) * 1996-07-15 1998-09-29 Buss; Richard A. Muzzle brake
US5798473A (en) * 1997-04-30 1998-08-25 Roblyer; Steven Harmonic optimization system for rifles
US6223458B1 (en) 1997-04-30 2001-05-01 Kevin Schwinkendorf Harmonic optimization technology
US6308609B1 (en) 1998-12-08 2001-10-30 Robert Bruce Davies Suppressor
US6557290B2 (en) 2000-12-28 2003-05-06 Daniel F. Kumler Adjustable shotgun choke
US6604445B2 (en) * 2001-02-28 2003-08-12 Nicolae Radu Sevastian Gas trap (GT) compensator
US20030154849A1 (en) * 2002-02-21 2003-08-21 Heinz-Gunter Breuer Gun barrel having a muzzle brake
US6899008B2 (en) * 2002-02-21 2005-05-31 Rheinmetall W&M Gmbh Gun barrel having a muzzle brake
US20040154208A1 (en) * 2003-02-12 2004-08-12 Walker Ronald N. Breeching tool
US6782651B1 (en) * 2003-02-12 2004-08-31 Inpromarketing Corp. Breaching tool
US20050066954A1 (en) * 2003-09-12 2005-03-31 Williams Dan E. Paintball gun barrel with compression chamber
US6948415B2 (en) 2003-11-06 2005-09-27 Surefire, Llc System for attaching a noise suppressor to a firearm
US20050115394A1 (en) * 2003-11-06 2005-06-02 Surefire, Llc System for attaching a noise suppressor to a firearm
US8973481B2 (en) 2003-11-06 2015-03-10 Surefire, Llc Firearm sound suppressor
US20060060076A1 (en) * 2003-11-06 2006-03-23 Surefire, Llc (A California Limited Liability Company) Systems for attaching a noise suppressor to a firearm
US7946069B2 (en) 2003-11-06 2011-05-24 Surefire, Llc Systems for attaching a noise suppressor to a firearm
US8209895B2 (en) 2003-11-06 2012-07-03 Surefire, Llc Systems for attaching a noise suppressor to a firearm
US20110203152A1 (en) * 2003-11-06 2011-08-25 Surefire, Llc Systems for attaching a noise suppressor to a firearm
US7676976B2 (en) 2003-11-06 2010-03-16 Surefire, Llc Systems for attaching a noise suppressor to a firearm
US7353741B2 (en) 2004-01-20 2008-04-08 John Brixius Gun barrel assembly
US20100224053A1 (en) * 2004-01-20 2010-09-09 John Brixius Gun barrel assembly
US7810272B2 (en) 2004-01-20 2010-10-12 John Brixius Gun barrel assembly
US7707763B2 (en) 2004-01-20 2010-05-04 John Brixius Gun barrel assembly
US20100058921A1 (en) * 2004-01-20 2010-03-11 John Brixius Gun barrel assembly
US20050262997A1 (en) * 2004-01-20 2005-12-01 John Brixius Gun barrel assembly
US7895787B1 (en) * 2008-01-11 2011-03-01 Andry Mark L Porting feature for firearm
US20110067284A1 (en) * 2008-01-11 2011-03-24 Andry Mark L Porting feature for firearm
DE102008036503A1 (en) * 2008-08-05 2010-02-11 Christoph Fuchs Device for reduction of backstroke in shotgun, has muzzle brake housing screwed with chocks on shot gun opening, and gas outlet boreholes provided in connection with dynamic stock caps and attached to transverse -and longitudinal axis
US20110252952A1 (en) * 2010-04-17 2011-10-20 Mcneill Robert Adjustable Muzzle Brake
US8186261B2 (en) * 2010-04-17 2012-05-29 Mcneill Robert Adjustable muzzle brake
US9163891B1 (en) * 2014-09-04 2015-10-20 Law Enforcement International Ltd Flash hider for firearm suppressor
US9709355B2 (en) * 2014-12-15 2017-07-18 Jered S. Joplin Recoil compensator for firearm
US9797672B2 (en) * 2015-01-17 2017-10-24 Brian Wilson Tunable muzzle compensator for a firearm
US20160334181A1 (en) * 2015-05-15 2016-11-17 James E. Bennington Tuner system and method for rifles
WO2018172805A1 (en) * 2017-03-24 2018-09-27 Palocska Janos Muzzle brake for guns
US10036605B1 (en) * 2017-04-06 2018-07-31 Kurt A. Kosman Adjustable muzzle device
US20190017771A1 (en) * 2017-04-06 2019-01-17 Kurt A. Kosman Adjustable muzzle device
US10082354B1 (en) * 2018-02-21 2018-09-25 Darryl S. Lee Firearm suppressor adapter for barrels having obstructions
US11098971B2 (en) * 2019-03-12 2021-08-24 Highland Canyon Company, Inc. Muzzle brake
US20210404760A1 (en) * 2020-06-02 2021-12-30 Aaron Hipp Adjustable tuning device

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