Abstract

A firearm can include a receiver, a bolt, and a gas block. In certain implementations, the receiver and/or barrel extension includes a locking shoulder, a lug-interface region forward of the locking shoulder, and a channel wall that defines a bolt channel and a bolt-lug raceway rearward of the locking shoulder. In some implementations, the bolt includes a bolt lug. The bolt lug can be sized and shaped to slidably engage the bolt-lug raceway. Additionally, the bolt can be positioned within the bolt channel of the receiver. Further, the gas block can be positioned at the lug-interface region. In some implementations, the gas block is rotatable with the bolt lug. In particular implementations, the gas block includes a raceway plug sized and shaped to block the bolt-lug raceway. The gas block can also include a bolt-lug notch sized and shaped to mate with the bolt lug.

IPC Classes  ?

• F41A 5/26 - Arrangements or systems for bleeding the gas from the barrel
• F41A 3/66 - Breech housings or frames; Receivers

Abstract

Embodiments of the present disclosure relate to trigger mechanisms for firearms. In one aspect of the present disclosure, the trigger mechanism can include a linkage between a striker sear and a main sear to control an amount of force exerted on the main sear by the striker sear. A portion of the force exerted on the striker sear by the striker can be exerted on the main sear through the sear linkage. In another aspect of the present disclosure, trigger mechanisms are described which additionally, or alternatively utilize one or more biasing members to provide a variable trigger pull weight.

IPC Classes  ?

• F41A 19/31 - Sear arrangements therefor

Abstract

A number of embodiments of a firearm are disclosed where the firearm includes a magazine configured to hold the bolt in an open position when the magazine is empty. In one embodiment, the firearm includes a bolt stop mechanism that moves between a first position where it allows the bolt to cycle between an open position and a closed position and a second position where it holds the bolt in the open position. The magazine is configured to actuate the bolt stop mechanism to the first position when the magazine is empty.

IPC Classes  ?

• F41A 17/36 - Magazine safeties locking the gun in a safety condition when the magazine is empty or removed
• F41A 19/15 - Modular firing mechanism units
• F41A 9/26 - Feeding of unbelted ammunition using a movable magazine or clip as feeding element using a revolving drum magazine
• F41A 9/73 - Drum magazines

Abstract

A number of embodiments of a firearm are disclosed where the firearm includes a magazine configured to hold the bolt in an open position when the magazine is empty. In one embodiment, the firearm includes a bolt stop mechanism that moves between a first position where it allows the bolt to cycle between an open position and a closed position and a second position where it holds the bolt in the open position. The magazine is configured to actuate the bolt stop mechanism to the first position when the magazine is empty.

IPC Classes  ?

• F41A 17/36 - Magazine safeties locking the gun in a safety condition when the magazine is empty or removed
• F41A 19/15 - Modular firing mechanism units
• F41A 9/26 - Feeding of unbelted ammunition using a movable magazine or clip as feeding element using a revolving drum magazine
• F41A 9/73 - Drum magazines

Abstract

A number of embodiments of a firearm are disclosed where the firearm includes a magazine configured to hold the bolt in an open position when the magazine is empty. In one embodiment, the firearm includes a bolt stop mechanism that moves between a first position where it allows the bolt to cycle between an open position and a closed position and a second position where it holds the bolt in the open position. The magazine is configured to actuate the bolt stop mechanism to the first position when the magazine is empty.

IPC Classes  ?

• F41A 17/36 - Magazine safeties locking the gun in a safety condition when the magazine is empty or removed
• F41A 9/26 - Feeding of unbelted ammunition using a movable magazine or clip as feeding element using a revolving drum magazine
• F41A 9/73 - Drum magazines

Abstract

A firearm choke tube includes a cylindrical body, a choke interrupted thread section, and a locking tab. The choke interrupted thread section is positioned on an outer surface of the cylindrical body and configured to threadably engage an interrupted thread section of a barrel of a firearm to limit longitudinal movement of the cylindrical body relative to the barrel. The locking tab protrudes from the outer surface of the cylindrical body and is configured to interface with a detent formed in the barrel to limit rotational movement of the cylindrical body relative to the barrel.

IPC Classes  ?

• F41A 21/00 - Barrels or gun tubes; Muzzle attachments; Barrel mounting means
• F41A 21/40 - Chokes for shotguns
• F41A 21/34 - Flash dampers

Abstract

A firearm choke tube includes a cylindrical body, a choke interrupted thread section, and a locking tab. The choke interrupted thread section is positioned on an outer surface of the cylindrical body and configured to threadably engage an interrupted thread section of a barrel of a firearm to limit longitudinal movement of the cylindrical body relative to the barrel. The locking tab protrudes from the outer surface of the cylindrical body and is configured to interface with a detent formed in the barrel to limit rotational movement of the cylindrical body relative to the barrel.

IPC Classes  ?

• F41A 21/00 - Barrels or gun tubes; Muzzle attachments; Barrel mounting means
• F41A 21/40 - Chokes for shotguns

Abstract

A magazine for a firearm may include a cavity that is shaped to prevent the tip of the bullets in the cartridges from contacting the magazine when the firearm recoils. The magazine may also be configured so that the cartridges in the magazine exit the cavity at least approximately in the center of the magazine. The magazine may be configured to include a biasing mechanism that pushes the cartridges upward in the cavity. The biasing mechanism may be configured to allow the magazine to be compact, simple, and reliable.

IPC Classes  ?

• F41A 9/65 - Box magazines having a cartridge follower

Abstract

A magazine for a firearm may include a cavity that is shaped to prevent the tip of the bullets in the cartridges from contacting the magazine when the firearm recoils. The magazine may also be configured so that the cartridges in the magazine exit the cavity at least approximately in the center of the magazine. The magazine may be configured to include a biasing mechanism that pushes the cartridges upward in the cavity. The biasing mechanism may be configured to allow the magazine to be compact, simple, and reliable.

IPC Classes  ?

• F41A 9/65 - Box magazines having a cartridge follower

Abstract

A shotgun includes an action that is capable of rapidly chambering a shotshell after the shotgun has run out of shotshells and is capable of allowing shotshells to be removed from the magazine without cycling the shotshells through the action.

IPC Classes  ?

• F41A 3/00 - Breech mechanism, e.g. locks

Abstract

A take-down rifle is described that can be separated into two halves to allow the rifle to be transported, cleaned, etc. easier. The takedown rifle includes a takedown mechanism that is used to couple the two halves of the rifle together. The takedown mechanism may move between a first position where the takedown mechanism holds the two halves together and a second position where the two halves are released. In one embodiment, the takedown mechanism may include a securing member that is selectively moved into and out of a recess in the barrel to hold and release the two halves. The securing member may be moved into and out of the recess with a lever, threaded fastener, or the like.

IPC Classes  ?

• F41A 21/48 - Barrel mounting means, e.g. releasable mountings for replaceable barrels

Abstract

A magazine for a firearm may include a cavity that is shaped to prevent the tip of the bullets in the cartridges from contacting the magazine when the firearm recoils. The magazine may also be configured so that the cartridges in the magazine exit the cavity at least approximately in the center of the magazine. The magazine may be configured to include a biasing mechanism that pushes the cartridges upward in the cavity. The biasing mechanism may be configured to allow the magazine to be compact, simple, and reliable.

IPC Classes  ?

• F41A 9/65 - Box magazines having a cartridge follower

Abstract

A magazine plug is configured to be positioned in a magazine of a shotgun to reduce the shotshell capacity of the shotgun. In one embodiment, the magazine plug has an elongated cross-sectional shape. The magazine plug is configured to rotate between a first orientation where the magazine plug can move longitudinally into and out of the magazine and a second orientation where the magazine plug is prevented from moving longitudinally out of the magazine.

IPC Classes  ?

• F41A 9/61 - Magazines

Abstract

A shotgun includes an action that locks the firing pin in a retracted position when the action is not closed. In one embodiment, the firing pin is held in a retracted position without the use of a spring, which may fail over time. In another embodiment, the action includes a bolt slide that is configured to hold the firing pin in the retracted position when the action is open.

IPC Classes  ?

• F41A 3/12 - Bolt action, i.e. the main breech opening movement being parallel to the barrel axis