Dec 2, 2025

US12487043 - Device for disassembling a firearm

This disclosure concerns a pistol having an anti-disassembly protection device, which includes a disassembly key arranged rotatably in a frame, and which can be manually turned between an angular locking position and an angular disassembly position, and which disassembly key may occupy a transverse resting position and a transverse rotation position. The disassembly key has blocking means that cooperate with additional blocking means on the frame in order to prevent rotation of the disassembly key into the angular disassembly position when the disassembly key occupies the transverse resting position.

Assignee: FN HERSTAL S.A.
Inventors: Laurent Balhan, Dorian Delvaux

firearmdisassemblypistol

The patent describes a pistol equipped with an anti-disassembly protection device featuring a rotatable disassembly key that can be manually adjusted between locking and disassembly positions. This key incorporates blocking mechanisms to prevent unauthorized disassembly when in a resting position, enhancing firearm safety.

Claim 1

1 . A pistol comprising an anti-disassembly protection device, the anti-disassembly protection device comprising: a disassembly key arranged rotatably in a frame, the disassembly key configured to be manually turned between an angular locking position and an angular disassembly position, wherein the disassembly key is configured to transition between a transverse resting position and a transverse rotation position, wherein the disassembly key comprises a first blocking means configured to cooperate with a second blocking means on the frame to prevent rotation of the disassembly key into the angular disassembly position when the disassembly key occupies the transverse resting position; wherein a barrel is affixed to the frame via an axle of the disassembly key passing into a hole or a slot disposed under the barrel; and wherein the disassembly key comprises a first index hole, a second index hole, and a sliding shoe held against the disassembly key by a spring, wherein the sliding shoe is supported on the first index hole when the disassembly key occupies the transverse resting position, and is supported on the second index hole when the disassembly key occupies the transverse rotation position. a disassembly key arranged rotatably in a frame, the disassembly key configured to be manually turned between an angular locking position and an angular disassembly position, wherein the disassembly key is configured to transition between a transverse resting position and a transverse rotation position, wherein the disassembly key comprises a first blocking means configured to cooperate with a second blocking means on the frame to prevent rotation of the disassembly key into the angular disassembly position when the disassembly key occupies the transverse resting position; wherein a barrel is affixed to the frame via an axle of the disassembly key passing into a hole or a slot disposed under the barrel; and wherein the disassembly key comprises a first index hole, a second index hole, and a sliding shoe held against the disassembly key by a spring, wherein the sliding shoe is supported on the first index hole when the disassembly key occupies the transverse resting position, and is supported on the second index hole when the disassembly key occupies the transverse rotation position.

Google Patents

https://patents.google.com/patent/US12487043

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12487043