Abstract: A safety pin locks a barrel latch while the firearm discharges a round of ammunition. The barrel latch safety locking mechanism is incorporated into the frame and is actuated by the trigger assembly. The barrel latch safety locking mechanism engages the barrel latch to prevent movement during firing keeping the barrel latch engaged with the barrel. The firearm is further comprised of a slide switch that is connected to the barrel latch that allows a user to disengage the barrel latch for loading.

Abstract: A barrel has a barrel body that extends a barrel length and a bore extending through the barrel body. The bore has a cartridge chamber section and a rifled section with a bore diameter. A cartridge shell fits within the cartridge chamber section and the projectile extends from the cartridge chamber section into the rifled section. The cartridge shell with the projectile has a shell length within the bore, the barrel length is less than twice the shell length. The rifled section has rifling grooves between rifling lands, and each of the rifling lands has a land width. The groove diameter is greater than the land diameter by an amount that is more than one half of the land width. The barrel body has an extractor assembly with an arm retractably extending from a cavity. The arm can rotate in the cavity when extended and does not rotate when retracted.

Abstract: In a breech loading firearm, an extractor arm is slidingly arranged within a cavity beneath the barrel. The extractor arm has a retracted position and an extended position. In the retracted position, the extractor arm is constrained from rotating, and in the extended position, the extractor arm has at least one degree of rotational freedom in the cavity without bending. The intermediate portion of the extractor arm is thicker than the distal end such that the second thickness fits within the cavity when the extractor arm is in its retracted position. The reduced thickness at the distal end provides a space between the extractor arm and a wall of the cavity when the extractor arm is in its extended position to provide for the rotation of the extractor arm within the cavity in its extended position. The proximal end of the extractor arm has an angled face.

Abstract: A modular linear striker has a firing pin assembly, an axial spring and a housing. The firing pin assembly includes a firing pin and a reset spring and may also include a separate slider. The firing pin has a resting position, a cocked position and a firing position. The reset spring biases the firing pin back in its resting position. When the slider is incorporated into the firing pin assembly, the axial spring biases the slider forward with a preloaded force. The housing surrounds the firing pin assembly and the axial spring. The housing has a notched section between its front face and its body section which fits within a setting in the firearm frame. The notched section engages the fitting in the firearm frame so that the modular linear striker is arranged in the proper position and orientation within the frame.

Abstract: Roller bearings are incorporated into the upper portion and lower portion of an elongated trigger assembly of a firearm to provide a trigger pull with smooth operation and balance while reducing wear. The roller bearings roll along trigger tracks that are adjacent to the top and bottom of the trigger pull or are formed as slots in the trigger pull. A safety pin locks a barrel latch while the firearm discharges a round of ammunition. The barrel latch safety locking mechanism is incorporated into the frame and is actuated by the trigger assembly. An extractor assembly for rimless shells is incorporated into a barrel assembly of a breech loading firearm.

Abstract: A modular linear striker has a firing pin assembly, an axial spring and a housing. The firing pin assembly includes a firing pin and a reset spring and may also include a separate slider. The firing pin has a resting position, a cocked position and a firing position. The reset spring biases the firing pin back in its resting position. When the slider is incorporated into the firing pin assembly, the axial spring biases the slider forward with a preloaded force. The housing surrounds the firing pin assembly and the axial spring. The housing has a notched section between its front face and its body section which fits within a setting in the firearm frame. The notched section engages the fitting in the firearm frame so that the modular linear striker is arranged in the proper position and orientation within the frame.