Mar 31, 2026

US12590776 - Discreet blank firing adapter

Provided is a blank firing adapter for a firearm that prevents a bullet or fragmentation from exiting a firearm barrel and traveling downrange. The device includes a body, a fore end, an aft end, a bore, a transverse exhaust hole, and a flange. The body is positioned within a muzzle end of the firearm barrel. The fore end includes a solid material to prevent bullet fragmentation from directly exiting the barrel in a direction coinciding with a point-of-aim direction when a live round is fired, and the transverse exhaust hole redirects gas traveling through the bore to a direction transverse to the muzzle end of the barrel. The device generates backpressure to permit automatic cycling of a weapon system, safely catches a fired bullet without any fragmentation to travel downrange, and is visually inconspicuous to the casual observer when installed, while allowing for the use of externally attached devices.

Inventors: Brian R Hoffman, Caleb W. McGee
Filing date: 2024-06-26

blankfiringadapterfirearmaccessorysafetydevice

The patent describes a blank firing adapter designed to prevent bullets or fragmentation from exiting a firearm barrel while allowing for automatic cycling of the weapon system. It features a solid fore end to catch fired bullets and a transverse exhaust hole to redirect gas, all while maintaining a discreet appearance when installed.

Claim 1

1 . A blank firing adapter for and a firearm barrel; said firearm barrel comprising a muzzle end, a muzzle crown, a bore, and a counterbore; said blank firing adapter comprising: a body, a fore end, an aft end, a bore, a transverse exhaust hole, and a flange; wherein said body is positioned within said muzzle end of said firearm barrel; wherein said counterbore permits said flange to fit within said bore of said firearm barrel and flush with said muzzle crown; wherein said bore extends from said aft end through said body and terminates at said transverse exhaust hole; wherein said transverse exhaust hole comprises an aperture that redirects gas traveling through said bore to a direction transverse to said muzzle end of said barrel; and wherein said fore end comprises a solid material to prevent bullet fragmentation from directly exiting said barrel in a direction coinciding with a point-of-aim direction when a live round is fired; wherein said flange within said counterbore enhances the structural ability of said blank firing adapter to capture a bullet. said firearm barrel comprising a muzzle end, a muzzle crown, a bore, and a counterbore; said blank firing adapter comprising: a body, a fore end, an aft end, a bore, a transverse exhaust hole, and a flange; wherein said body is positioned within said muzzle end of said firearm barrel; wherein said counterbore permits said flange to fit within said bore of said firearm barrel and flush with said muzzle crown; wherein said bore extends from said aft end through said body and terminates at said transverse exhaust hole; wherein said transverse exhaust hole comprises an aperture that redirects gas traveling through said bore to a direction transverse to said muzzle end of said barrel; and wherein said fore end comprises a solid material to prevent bullet fragmentation from directly exiting said barrel in a direction coinciding with a point-of-aim direction when a live round is fired; wherein said flange within said counterbore enhances the structural ability of said blank firing adapter to capture a bullet.

Google Patents

https://patents.google.com/patent/US12590776

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12590776