Fn Herstal S.a.

Fn Manufacturing, LLC

Fn America, LLC

John Michael Beville

Olivier Holger Costet

Luke Randel Howlett

Jonathan H Derrick

Douglas Alan Shaffer

Charles N Davenport

Charles A Moore

Thomas Mooty

Harold L Miller

Charles Neil Davenport, Jr

Timothy Delamare Giauque

Dustin Keith Sroufe

Pistol

Semi-automatic pistol

A reversible modification to the gas block of a machine gun reduces the rate of fire to the machine gun's design rate for use when a suppressor has been added to the barrel and which suppressor would, without the present modification, elevate the firing rate from the machine gun's design rate. The modification is the use of a stem inserted into the bore of the gas block nozzle to further limit the combustion gas being delivered to the machine gun's operating group. A hole formed in the stem restricts gas flow. The stem seats against the gas block nozzle and is held in place by the cap covering the gas block but may alternatively be held in place in several alternative ways described. Removal of the cap allows the stem to be removed from the gas block when the suppressor has been removed from the machine gun barrel.

Gas block valve stem for modifying the firing rate of a machine gun

A semi-infinitely-adjustable butt stock assembly. A butt stock is slidably affixed to a buffer stem. An over-center lock is attached to the butt stock adjacent to the buffer stem. The user can disengage the over-center lock from the buffer stem by rotating a lever thereby permitting the longitudinal position of the butt stock to be adjusted relative to the buffer plate. To secure the butt stock at the desired position, the user rotates the lever in the opposite direction causing the over-center lock to re-engage the buffer stem. A cheek rest overlaying the butt stock and biased forward with respect thereto is adjustable vertically with respect to the butt stock by manually moving the cheek rest aft, adjusting it vertically, and releasing the cheek rest.

Adjustable butt stock assembly

Growing community of inventors

Blythewood, SC, United States of America

John Michael Beville