IP Library Granted Patent US 12,523,441
Granted Patent B2
US 12,523,441 · App. 18/784,230 · Granted Jan 13, 2026

Energy disperser for a firearm

Inventors: Richard Brady Olsen (Rainier, WA); Michael Allyn Miller (Tenino, WA)
Assignee: Killer Innovations, Inc.
F41A21/325F41A21/36F41A21/34
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Quick Facts
Patent No.
US 12,523,441
App. No.
18/784,230
Granted
Jan 13, 2026
Kind
B2
Abstract

A muzzle device with an inner core coupled to the barrel, and an outer sleeve coupled to the inner core. The inner core is sized so that it has a smaller outside diameter than an inside diameter of a gas block fitted to the firearm to which the inner core is to be attached.

Claims (26)

1 . A muzzle device structured to be coupled to a barrel of a firearm, the

muzzle device comprising:

an inner core structured to be coupled to the barrel; and

an outer sleeve removably coupled to and disposed externally with respect to the inner core,

wherein the inner core has an outer diameter that is less than an inside diameter of a gas block fitted to the barrel, and wherein the outer sleeve has an inside diameter that is less than 0.1 inches greater than the outer diameter of the inner core.

2 . The muzzle device according to claim 1 , wherein the inner core includes first threads to couple to the barrel and second threads to couple to the outer sleeve, wherein the first threads and second threads are reverse threaded.

3 . The muzzle device according to claim 1 , wherein the inner core has a first end and a second end disposed opposite and distal the first end, wherein the first end of the inner core is threaded for coupling the barrel, and wherein the second end of the inner core is threaded to be coupled to the outer sleeve.

4 . The muzzle device according to claim 1 , further comprising a set screw extending through the outer sleeve and into engagement with the inner core.

5 . The muzzle device according to claim 4 , wherein the inner core has a groove, and wherein the set screw cuts into the groove to minimize the set screw become dislodged from the inner core.

6 . The muzzle device according to claim 1 , wherein the inner core has a recessed groove about a thru hole extending through a wall of the inner core configured for a pin and welded coupling to the barrel.

7 . The muzzle device according to claim 1 , wherein each of the inner core and the outer sleeve has a plurality of ports to counteract recoil, and wherein the ports of the inner core and the ports of the outer sleeve are aligned with one another.

8 . The muzzle device according to claim 1 , wherein the inner core has a number of thru holes disposed on a top region thereof, and wherein the outer sleeve has a number of cutout regions each aligned with a corresponding one of the number of thru holes in order to minimize lift of the barrel during firing of the firearm.

9 . The muzzle device according to claim 8 , wherein the number of thru holes is less than four.

10 . The muzzle device according to claim 1 , wherein each of the inner core and the outer sleeve has a number of planar faces at a corresponding end thereof and being structured for gripping by a tool.

11 . The muzzle device according to claim 1 , wherein the inner core has a plurality of ports disposed between a first end and a second opposite and distal end of the inner core, wherein each of the ports are beveled, and wherein the beveling of the ports increases progressively from a first of the ports to a third of the ports.

12 . A muzzle device structured to be coupled to a barrel of a firearm, the muzzle device comprising:

an inner core structured to be coupled to the barrel; and

an outer sleeve removably coupled to and disposed externally with respect to the inner core,

wherein the inner core has an outer diameter that is less than an inside diameter of a gas block fitted to the barrel, and wherein the inner core has a first end and a second end disposed opposite and distal the first end, wherein the first end of the inner core is threaded for coupling the barrel, and wherein the second end of the inner core is threaded to be coupled to the outer sleeve.

13 . The muzzle device according to claim 12 , wherein the inner core includes first threads to couple to the barrel and second threads to couple to the outer sleeve, wherein the first threads and second threads are reverse threaded.

14 . The muzzle device according to claim 12 , wherein the inner core has a recessed groove about a thru hole extending through a wall of the inner core configured for a pin and welded coupling to the barrel.

15 . The muzzle device according to claim 12 , wherein each of the inner core and the outer sleeve has a plurality of ports to counteract recoil, and wherein the ports of the inner core and the ports of the outer sleeve are aligned with one another.

16 . The muzzle device according to claim 12 , wherein the inner core has a number of thru holes disposed on a top region thereof, and wherein the outer sleeve has a number of cutout regions each aligned with a corresponding one of the number of thru holes in order to minimize lift of the barrel during firing of the firearm.

17 . The muzzle device according to claim 16 , wherein the number of thru holes is less than four.

18 . The muzzle device according to claim 12 , wherein each of the inner core and the outer sleeve has a number of planar faces at a corresponding end thereof and being structured for gripping by a tool.

19 . The muzzle device according to claim 12 , wherein the inner core has a plurality of ports disposed between a first end and a second opposite and distal end of the inner core, wherein each of the ports are beveled, and wherein the beveling of the ports increases progressively from a first of the ports to a third of the ports.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 25, 2024
From: OLSEN, RICHARD BRADY; MILLER, MICHAEL ALLYN
To: KILLER INNOVATIONS, INC.
Reel/Frame 068085/0015 →
Continuity (2)
Provisional Application 63516274 · Jul 28, 2023
Related Publication 20250035397A1 · Jan 30, 2025
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