Abstract

An adjustable gas key for use with a firearm is provided. The adjustable gas key includes a base portion and a tube portion coupled to the base portion. An inlet tube extends through the tube portion and an outlet tube angled from the inlet tube exits through a bottom side of the base portion. The adjustable gas key includes an inner volume located at a junction of the inlet tube and the outlet tube. The adjustable gas key also includes an adjustment device operatively coupled to the adjustable gas key, wherein the adjustment device adjusts a size of the inner volume. The adjustable gas key is operatively coupled to a bolt carrier of the firearm, wherein adjustment of the size of the inner volume adjusts the force of action of the bolt carrier.

IPC Classes  ?

• F41A 5/28 - Adjustable systems

Abstract

A firearm including a receiver, a barrel, a breech bolt assembly, and a trigger assembly. The bolt assembly has a bolt including a body portion, a lug portion, and a firing pin bore. The lug portion includes outward extending lugs, a cartridge recess, and an off-center hole. The bolt assembly also includes an extractor and an ejector pin. At least some of the lugs on the lug portion of the bolt have a tapering outer surface so that a rearward surface of the respective lug is taller than a forward surface of the respective lug and at least part of each tapered outer surface is taller on one side of a circumferential centerline than on another side of the circumferential centerline.

IPC Classes  ?

• F41A 3/30 - Interlocking means, e.g. locking lugs, screw threads
• F41A 3/26 - Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt

Abstract

A bolt carrier with integral adjustable gas key for use with a firearm is provided. The adjustable gas key includes a base portion and a tube portion coupled to the base portion. An inlet passage extends through the tube portion and an outlet passage angled from the inlet passage exits through the base portion. The adjustable gas key includes an inner volume located at a junction of the inlet passage and the outlet passage. The adjustable gas key also includes an adjustment device operatively coupled to the adjustable gas key, wherein the adjustment device adjusts a size of the inner volume. The adjustable gas key is integral and unitary with a bolt carrier of the firearm, wherein adjustment of the size of the inner volume adjusts the force of action of the bolt carrier.

IPC Classes  ?

• F41A 5/28 - Adjustable systems
• F41A 3/26 - Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt
• F41A 5/24 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated by direct action of gas pressure on bolt or locking elements

Goods & Services

firearms; firearm components, namely, barrels for rifles, breech bolts, rifles, ammunition; ammunition for firearms