Feb 10, 2026

US12546547 - Firearm platform and method of connecting upper and lower receivers

A firearm platform and method of connecting an upper receiver to a lower receiver. The upper receiver has a pivot lug and a takedown lug with perimeter openings in opposite directions. The lower receiver has a locking member that pushes against the takedown lug which causes the upper receiver to displace forward. As a result of the forward displacement, a pivot pin in the lower receiver exerts an opposing force against the pivot lug. The locking member is displaced between a locked and unlocked position through a lever located on an exterior surface of the lower receiver. When the locking member is in the locked position, the lower receiver and uppers receiver form a connection that is tight and free from slop.

Inventors: Keith Berry, David Moore
Filing date: 2024-01-16

firearmreceiverlockingmechanism

The patent describes a firearm platform featuring a method for securely connecting an upper receiver to a lower receiver using a locking assembly that includes a lever for toggling between locked and unlocked positions. When locked, the upper and lower receivers are tightly connected, while they can be fully separated when the locking member is in the unlocked position.

Claim 1

1 . A firearm platform comprising: an upper receiver having a takedown lug; a lower receiver having an interior at least partially defined by a sidewall; a locking assembly comprising (i) a locking member within the interior and (ii) a lever on the sidewall; and wherein displacement of the lever on the sidewall displaces the locking member between an unlocked position and a locked position, wherein the upper receiver and the lower receiver are fully separable from each other when in the unlocked position, wherein the upper receiver and the lower receiver are not fully separable from each other when in the locked position, and wherein the locking member is at least partially inside the takedown lug when in the locked position and outside of the takedown lug when in the unlocked position. an upper receiver having a takedown lug; a lower receiver having an interior at least partially defined by a sidewall; a locking assembly comprising (i) a locking member within the interior and (ii) a lever on the sidewall; and wherein displacement of the lever on the sidewall displaces the locking member between an unlocked position and a locked position, wherein the upper receiver and the lower receiver are fully separable from each other when in the unlocked position, wherein the upper receiver and the lower receiver are not fully separable from each other when in the locked position, and wherein the locking member is at least partially inside the takedown lug when in the locked position and outside of the takedown lug when in the unlocked position.

Google Patents

https://patents.google.com/patent/US12546547

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12546547