Jul 8, 2025

US12352534 - Systems and methods for simulated rifle rounds

An apparatus includes a bolt carrier assembly and a bolt assembly. The bolt assembly includes a bolt body member, the bolt body member having a proximal end portion and a distal end portion, and defining a longitudinal axis extending from the proximal end to the distal end. The bolt assembly includes a guide member attached to proximal end portion and the guide member is parallel to the longitudinal axis. The bolt assembly further includes a bolt chamber interface attached to a distal end portion, the bolt chamber interface nests within an interior wall of a firearm chamber, and the bolt chamber interface limits rotational and axial movement of the bolt assembly relative to the firearm chamber. The bolt assembly includes a bolt nipple connector for mating with a nipple assembly of a magazine assembly.

Assignee: EPIC MFG LLC
Inventors: Jason D. Jackson
Filing date: 2023-04-03

The patent describes a system for converting a conventional firearm to fire simulated rounds by replacing the stock bolt carrier and bolt assemblies with specialized trainer components. These trainer assemblies utilize pressurized gas from a trainer magazine to simulate the firing process, allowing for realistic training without using live ammunition.

Claim 1

A method of converting a firearm to fire a simulated round, comprising: removing a stock bolt carrier assembly and a stock bolt assembly from the firearm, the firearm being an actual firearm configured to use conventional ammunition upon a condition that the stock bolt carrier assembly and the stock bolt assembly are installed in the firearm; and installing a trainer bolt carrier assembly and a trainer bolt assembly into the firearm, the trainer bolt carrier assembly and the trainer bolt assembly being axially aligned, the trainer bolt assembly defining an interior volume and including an inner core, wherein: the interior volume is configured to receive a pressurized gas from a trainer magazine prior to actuation of the firearm, the inner core is positioned within the interior volume at a proximal position, the inner core is configured to move in a distal direction within the interior volume in response to actuation of the firearm, the movement of the inner core in the distal direction is configured to release a portion of the pressurized gas from the interior volume into the trainer bolt carrier assembly in a proximal direction, and the trainer bolt carrier assembly is configured to move in the proximal direction relative to the trainer bolt assembly in response to the portion of the pressurized gas. removing a stock bolt carrier assembly and a stock bolt assembly from the firearm, the firearm being an actual firearm configured to use conventional ammunition upon a condition that the stock bolt carrier assembly and the stock bolt assembly are installed in the firearm; and installing a trainer bolt carrier assembly and a trainer bolt assembly into the firearm, the trainer bolt carrier assembly and the trainer bolt assembly being axially aligned, the trainer bolt assembly defining an interior volume and including an inner core, wherein: the interior volume is configured to receive a pressurized gas from a trainer magazine prior to actuation of the firearm, the inner core is positioned within the interior volume at a proximal position, the inner core is configured to move in a distal direction within the interior volume in response to actuation of the firearm, the movement of the inner core in the distal direction is configured to release a portion of the pressurized gas from the interior volume into the trainer bolt carrier assembly in a proximal direction, and the trainer bolt carrier assembly is configured to move in the proximal direction relative to the trainer bolt assembly in response to the portion of the pressurized gas. the interior volume is configured to receive a pressurized gas from a trainer magazine prior to actuation of the firearm, the inner core is positioned within the interior volume at a proximal position, the inner core is configured to move in a distal direction within the interior volume in response to actuation of the firearm, the movement of the inner core in the distal direction is configured to release a portion of the pressurized gas from the interior volume into the trainer bolt carrier assembly in a proximal direction, and the trainer bolt carrier assembly is configured to move in the proximal direction relative to the trainer bolt assembly in response to the portion of the pressurized gas.

Google Patents

https://patents.google.com/patent/US12352534

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12352534