US12492878 - Recessed expansion chamber in a gun slide configured for improving recoil mitigation in firearms

The patent describes a gun slide for a pistol that incorporates a recessed expansion chamber positioned forward of the barrel, designed to improve recoil mitigation by allowing gases to expand and redirect out of the slide. This chamber features a cylindrical cavity that is larger than the barrel and includes a splash back wall to effectively manage gas flow after firing.

Claim 1

1 . A gun slide for a pistol firearm with a barrel, the gun slide comprising: a recessed expansion chamber, the recessed expansion chamber is positioned forward of a barrel end of the barrel; an expansion chamber opening being a slot through a top of the gun slide above and in communication with the recessed expansion chamber; wherein the recessed expansion chamber includes: a cylindrical shaped cavity positioned forward of the barrel end and sized larger than the barrel, the cylindrical shaped cavity positioned forward of the barrel end and sized larger than the barrel end is configured for the gases to immediately expand after exiting the barrel end of the barrel, wherein the cylindrical shaped cavity is positioned in a body of the gun slide forward of a barrel support; the cylindrical shaped cavity of the recessed expansion chamber is recessed from a main barrel support to a recessed depth; the cylindrical shaped cavity of the recessed expansion chamber includes a width, the width of the recessed expansion chamber is wider than a muzzle opening; the cylindrical shaped cavity of the recessed expansion chamber extends an extension distance from the barrel end to a muzzle end; the cylindrical shaped cavity of the recessed expansion chamber creates a splash back wall, the splash back wall is configured to redirect the gases away from a muzzle end opening and out through the expansion chamber opening from the recessed expansion chamber, wherein the splash back wall is positioned on the muzzle end opening around the periphery of the muzzle opening; and the cylindrical shaped cavity of the recessed expansion chamber is configured to allow gases leaving the barrel at the barrel end to expand and be directed out of the gun slide through the slot through the top of the gun slide. a recessed expansion chamber, the recessed expansion chamber is positioned forward of a barrel end of the barrel; an expansion chamber opening being a slot through a top of the gun slide above and in communication with the recessed expansion chamber; wherein the recessed expansion chamber includes: a cylindrical shaped cavity positioned forward of the barrel end and sized larger than the barrel, the cylindrical shaped cavity positioned forward of the barrel end and sized larger than the barrel end is configured for the gases to immediately expand after exiting the barrel end of the barrel, wherein the cylindrical shaped cavity is positioned in a body of the gun slide forward of a barrel support; the cylindrical shaped cavity of the recessed expansion chamber is recessed from a main barrel support to a recessed depth; the cylindrical shaped cavity of the recessed expansion chamber includes a width, the width of the recessed expansion chamber is wider than a muzzle opening; the cylindrical shaped cavity of the recessed expansion chamber extends an extension distance from the barrel end to a muzzle end; the cylindrical shaped cavity of the recessed expansion chamber creates a splash back wall, the splash back wall is configured to redirect the gases away from a muzzle end opening and out through the expansion chamber opening from the recessed expansion chamber, wherein the splash back wall is positioned on the muzzle end opening around the periphery of the muzzle opening; and a cylindrical shaped cavity positioned forward of the barrel end and sized larger than the barrel, the cylindrical shaped cavity positioned forward of the barrel end and sized larger than the barrel end is configured for the gases to immediately expand after exiting the barrel end of the barrel, wherein the cylindrical shaped cavity is positioned in a body of the gun slide forward of a barrel support; the cylindrical shaped cavity of the recessed expansion chamber is recessed from a main barrel support to a recessed depth; the cylindrical shaped cavity of the recessed expansion chamber includes a width, the width of the recessed expansion chamber is wider than a muzzle opening; the cylindrical shaped cavity of the recessed expansion chamber extends an extension distance from the barrel end to a muzzle end; the cylindrical shaped cavity of the recessed expansion chamber creates a splash back wall, the splash back wall is configured to redirect the gases away from a muzzle end opening and out through the expansion chamber opening from the recessed expansion chamber, wherein the splash back wall is positioned on the muzzle end opening around the periphery of the muzzle opening; and the cylindrical shaped cavity of the recessed expansion chamber is configured to allow gases leaving the barrel at the barrel end to expand and be directed out of the gun slide through the slot through the top of the gun slide.

Google Patents

https://patents.google.com/patent/US12492878

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12492878