Abstract: A gas block for a firearm may include a quick release sling attachment. The sling attachment utilizes a pin that engages with a bore in the body of the gas block. The sling attachment features a ring that can be in a fixed position or can swivel.

Abstract: A rotating bolt firearm may be configured to fire a .308 cartridge. However, the firearm may have a reduced weight in comparison to standard .308 rifles. The firearm may have many components typically used in a .223 rifle. The firearm may include a barrel extension with an extractor gap, which allows a .308 bolt to fit within a .223 sized barrel extension. The firearm may comprise an elongated magazine well in comparison to a .223 mil-spec rifle. The firearm may weigh less than 6.8 pounds with a 16 inch barrel, or less than 6.3 pounds with a 10.5 inch barrel.

Abstract: A gas block for a firearm may include a quick release sling attachment. The sling attachment utilizes a pin that engages with a bore in the body of the gas block. The sling attachment features a ring that can be in a fixed position or can swivel.

Abstract: A rotating bolt firearm may be configured to fire a .308 cartridge. However, the firearm may have a reduced weight in comparison to standard .308 rifles. The firearm may have many components typically used in a .223 rifle. The firearm may include a barrel extension with an extractor gap, which allows a .308 bolt to fit within a .223 sized barrel extension. The firearm may comprise an elongated magazine well in comparison to a .223 mil-spec rifle. The firearm may weigh less than 6.8 pounds with a 16 inch barrel, or less than 6.3 pounds with a 10.5 inch barrel.

Abstract: In various embodiments, a buffer retention system may comprise a body, a retention tab and a spring. The body may comprise a generally cylindrical portion and a partially annular guide portion. The generally cylindrical portion may define a channel. The partially annular guide portion may be operatively coupled to the cylindrical portion. The retention tab may be installable in the channel. The retention tab may be configured to protrude through the partially annular guide portion. The spring may be installable within the channel. The spring may be configured to position the retention tab through the partially annular guide portion.

Abstract: A rotating bolt firearm may be configured to fire a .308 cartridge. However, the firearm may have a reduced weight in comparison to standard .308 rifles. The firearm may have many components typically used in a .223 rifle. The firearm may include a barrel extension with an extractor gap, which allows a .308 bolt to fit within a .223 sized barrel extension. The firearm may comprise an elongated magazine well in comparison to a .223 mil-spec rifle. The firearm may weigh less than 6.8 pounds with a 16 inch barrel, or less than 6.3 pounds with a 10.5 inch barrel.

Abstract: In various embodiments, a rotating bolt firearm may comprise an upper receiver assembly. The upper receiver assembly may comprise an upper receiver, a bolt, a barrel, and an operating system. The bolt may be installable in the upper receiver. The bolt may be moveable between a first position and a second position. The barrel may be operatively coupled to the upper receiver. The barrel may be configured to receive a forward portion of the bolt. The operating system may comprise a gas block, an adjustment, and a spring loaded detent assembly. The adjustment may comprise a threaded portion and a plurality of notches. The spring loaded detent assembly may be configured to selectively engage one of the plurality of notches in response to rotating the adjustment. The operating system may be configured to adjustably vary a gas pressure in the operating system.

Abstract: A gas block for a firearm may include a quick release sling attachment. The sling attachment utilizes a pin that engages with a bore in the body of the gas block. The sling attachment features a ring that can be in a fixed position or can swivel.

Abstract: A rotating bolt firearm may be configured to fire a .308 cartridge. However, the firearm may have a reduced weight in comparison to standard .308 rifles. The firearm may have many components typically used in a .223 rifle. The firearm may include a barrel extension with an extractor gap, which allows a .308 bolt to fit within a .223 sized barrel extension. The firearm may comprise an elongated magazine well in comparison to a .223 mil-spec rifle. The firearm may weigh less than 6.8 pounds with a 16 inch barrel, or less than 6.3 pounds with a 10.5 inch barrel.

Abstract: In various embodiments, a buffer retention system may comprise a body, a retention tab and a spring. The body may comprise a generally cylindrical portion and a partially annular guide portion. The generally cylindrical portion may define a channel. The partially annular guide portion may be operatively coupled to the cylindrical portion. The retention tab may be installable in the channel. The retention tab may be configured to protrude through the partially annular guide portion. The spring may be installable within the channel. The spring may be configured to position the retention tab through the partially annular guide portion.

Abstract: In various embodiments, an AR-15/M-16 style rifle may comprise a lower receiver, a magazine catch spring, a magazine release button, an ambidextrous magazine release button, and a magazine catch. The magazine catch spring may be at least partially installable within the lower receiver. The magazine release button may operatively engage a first end of the magazine catch spring. The magazine release button may be movably installed in the lower receiver. The ambidextrous magazine release button may be pivotally installed within the lower receiver. The ambidextrous magazine release button may be configured to pivot about a pivot screw in the lower receiver. The magazine catch may be moveably installed in the lower receiver. The magazine catch may comprise a first portion that operatively engages the magazine release button and a second portion that operatively engages the ambidextrous magazine release button.

Abstract: In various embodiments, a buffer retention system may comprise a body, a retention tab and a spring. The body may comprise a generally cylindrical portion and a partially annular guide portion. The generally cylindrical portion may define a channel. The partially annular guide portion may be operatively coupled to the cylindrical portion. The retention tab may be installable in the channel. The retention tab may be configured to protrude through the partially annular guide portion. The spring may be installable within the channel. The spring may be configured to position the retention tab through the partially annular guide portion.

Abstract: A rotating bolt firearm may be configured to fire a .308 cartridge. However, the firearm may have a reduced weight in comparison to standard .308 rifles. The firearm may have many components typically used in a .223 rifle. The firearm may include a barrel extension with an extractor gap, which allows a .308 bolt to fit within a .223 sized barrel extension. The firearm may comprise an elongated magazine well in comparison to a .223 mil-spec rifle. The firearm may weigh less than 6.8 pounds with a 16 inch barrel, or less than 6.3 pounds with a 10.5 inch barrel.

Abstract: In various embodiments, an AR-15/M-16 style rifle may comprise a lower receiver, a magazine catch spring, a magazine release button, an ambidextrous magazine release button, and a magazine catch. The magazine catch spring may be at least partially installable within the lower receiver. The magazine release button may operatively engage a first end of the magazine catch spring. The magazine release button may be movably installed in the lower receiver. The ambidextrous magazine release button may be pivotally installed within the lower receiver. The ambidextrous magazine release button may be configured to pivot about a pivot screw in the lower receiver. The magazine catch may be moveably installed in the lower receiver. The magazine catch may comprise a first portion that operatively engages the magazine release button and a second portion that operatively engages the ambidextrous magazine release button.

Abstract: In various embodiments, an AR-15/M-16 style rifle may comprise a lower receiver, a magazine catch spring, a magazine release button, an ambidextrous magazine release button, and a magazine catch. The magazine catch spring may be at least partially installable within the lower receiver. The magazine release button may operatively engage a first end of the magazine catch spring. The magazine release button may be movably installed in the lower receiver. The ambidextrous magazine release button may be pivotally installed within the lower receiver. The ambidextrous magazine release button may be configured to pivot about a pivot screw in the lower receiver. The magazine catch may be moveably installed in the lower receiver. The magazine catch may comprise a first portion that operatively engages the magazine release button and a second portion that operatively engages the ambidextrous magazine release button.

Abstract: A semi-automatic or automatic firearm comprising a hand guard that includes a three dimensional end profile. The three dimensional end profile can depict subject matter related to sporting, outdoors, military, and hunting-related interests, such as the head and face of a warthog or peccary. The firearm can also include a bipod which includes feet configured and shaped to resemble animal feet, such as the hooves of a warthog or peccary.