US12723827 - Staked bolt carrier for a firearm

The patent describes a bolt carrier assembly for firearms that features a gas key with a unique design, including a hole for a fastening element and a region of minimal wall thickness. The gas key is secured to the bolt carrier using staking techniques that ensure stability while maintaining structural integrity.

Claim 1

1 . A bolt carrier assembly for a firearm, wherein the firearm has a barrel that extends in a firing direction, the bolt carrier assembly comprising: a bolt carrier; and a gas key having a side wall, a guide surface, and an upper region; wherein at least one hole is formed in the gas key along a median plane of the gas key, the at least one hole including a bore that extends along a hole axis that through a central point and a recess in the upper region of the gas key, and the at least one hole is configured to receive a fastening element; a region of minimal wall thickness of the gas key between the recess and the side wall is formed along a line that is normal to the median plane of the gas key and that intersects the hole axis; and the gas key is fastened to the bolt carrier by means of at least one fastening element, wherein the at least one fastening element is secured by at least one staking that includes at least one side wall of the gas key, where the at least one staking is formed at a depth in the at least one side wall, and the at least one staking is spaced apart from the region of minimal wall thickness, as seen in the firing direction. a bolt carrier; and a gas key having a side wall, a guide surface, and an upper region; wherein at least one hole is formed in the gas key along a median plane of the gas key, the at least one hole including a bore that extends along a hole axis that through a central point and a recess in the upper region of the gas key, and the at least one hole is configured to receive a fastening element; a region of minimal wall thickness of the gas key between the recess and the side wall is formed along a line that is normal to the median plane of the gas key and that intersects the hole axis; and the gas key is fastened to the bolt carrier by means of at least one fastening element, wherein the at least one fastening element is secured by at least one staking that includes at least one side wall of the gas key, where the at least one staking is formed at a depth in the at least one side wall, and the at least one staking is spaced apart from the region of minimal wall thickness, as seen in the firing direction. at least one hole is formed in the gas key along a median plane of the gas key, the at least one hole including a bore that extends along a hole axis that through a central point and a recess in the upper region of the gas key, and the at least one hole is configured to receive a fastening element; a region of minimal wall thickness of the gas key between the recess and the side wall is formed along a line that is normal to the median plane of the gas key and that intersects the hole axis; and the gas key is fastened to the bolt carrier by means of at least one fastening element, wherein the at least one fastening element is secured by at least one staking that includes at least one side wall of the gas key, where the at least one staking is formed at a depth in the at least one side wall, and the at least one staking is spaced apart from the region of minimal wall thickness, as seen in the firing direction.

Google Patents

https://patents.google.com/patent/US12723827

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12723827