Jun 10, 2025

US12326311 - Modular bolt action

A modular bolt action for a bolt action firearm is provided. The bolt action includes a receiver and a bolt assembly, the receiver being reconfigurable in a variety of different ways to accommodate a variety of different bolt assemblies. In this way, the modular bolt action can be reconfigured from a left-handed action to a right-handed action and/or from a two-lug action to a three-lug action. Fabrication of the modular bolt action includes adjusting the receiver to accommodate a desired bolt assembly and engaging such bolt assembly with the receiver.

Inventors: Brian Finamore
Filing date: 2023-07-28

bolt actionfirearmmodular

The patent describes a modular bolt action system for firearms that allows reconfiguration between left-handed and right-handed setups, as well as different lug configurations. This system includes a receiver and bolt assembly that can be adjusted by replacing components like the extraction cam and bolt assembly to accommodate user preferences.

Claim 1

A modular bolt action comprising: a receiver assembly comprising a receiver body and an extraction cam coupled thereto; and a bolt assembly comprising a bolt body and a bolt handle extending outwardly from a first portion of said bolt body, said receiver body defining an inner cavity for receiving a second portion of said bolt body, wherein the modular bolt action is movable between a right-handed configuration and a left-handed configuration, wherein said bolt assembly rotates about a longitudinal axis of said receiver assembly as said bolt assembly moves between a locked configuration and an unlocked configuration, wherein said bolt assembly slides along the longitudinal axis as the bolt assembly moves between a closed configuration and an open configuration, wherein the modular bolt action is one of a first type or a second type, wherein for the first type of modular bolt action; said extraction cam is a left-handed extraction cam or a right-handed extraction cam, and moving the modular bolt action from the left-handed configuration to the right-handed configuration comprises replacing a left-handed extraction cam with a right-handed extraction cam, and wherein for the second type of modular bolt action; said extraction cam is an ambidextrous extraction cam; the bolt assembly is a left-handed bolt assembly or a right-handed bolt assembly; and moving the modular bolt action from the left-handed configuration to the right-handed configuration comprises replacing the left-handed bolt assembly with the right-handed bolt assembly. a receiver assembly comprising a receiver body and an extraction cam coupled thereto; and a bolt assembly comprising a bolt body and a bolt handle extending outwardly from a first portion of said bolt body, said receiver body defining an inner cavity for receiving a second portion of said bolt body, wherein the modular bolt action is movable between a right-handed configuration and a left-handed configuration, wherein said bolt assembly rotates about a longitudinal axis of said receiver assembly as said bolt assembly moves between a locked configuration and an unlocked configuration, wherein said bolt assembly slides along the longitudinal axis as the bolt assembly moves between a closed configuration and an open configuration, wherein the modular bolt action is one of a first type or a second type, wherein for the first type of modular bolt action; said extraction cam is a left-handed extraction cam or a right-handed extraction cam, and moving the modular bolt action from the left-handed configuration to the right-handed configuration comprises replacing a left-handed extraction cam with a right-handed extraction cam, and said extraction cam is a left-handed extraction cam or a right-handed extraction cam, and moving the modular bolt action from the left-handed configuration to the right-handed configuration comprises replacing a left-handed extraction cam with a right-handed extraction cam, and wherein for the second type of modular bolt action; said extraction cam is an ambidextrous extraction cam; the bolt assembly is a left-handed bolt assembly or a right-handed bolt assembly; and moving the modular bolt action from the left-handed configuration to the right-handed configuration comprises replacing the left-handed bolt assembly with the right-handed bolt assembly. said extraction cam is an ambidextrous extraction cam; the bolt assembly is a left-handed bolt assembly or a right-handed bolt assembly; and moving the modular bolt action from the left-handed configuration to the right-handed configuration comprises replacing the left-handed bolt assembly with the right-handed bolt assembly.

Google Patents

https://patents.google.com/patent/US12326311

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12326311