An action system for reducing recoil and muzzle rise in firearms is provided. The action system includes an outer housing having an internal cavity, a buffer tube in operable communication with a bolt carrier group of a firearm, and a slidable buffer within the buffer tube. A lever arm, pivotally secured within the outer housing, is operably connected to the buffer and moves radially under the buffer's force. A spring in the cavity engages with the lever arm, compressing as the lever arm is acted upon by the linear force produced by a bolt carrier group until the spring force exceeds the linear force, thus forcing the buffer in a direction opposite the direction of the linear force.

A modular two-piece bolt system for firearms with blowback actions provides a rear bolt piece which detachably couples to plural different front bolt pieces each of different mass. The front bolt pieces have a similar configuration and common coupling interface which forms an interlocked relationship with a complementary configured coupling interface on the rear bolt piece to prevent axial separation of the pieces when the action of the firearm is cycled. The system allows various front bolt pieces to be selected and used interchangeably with the rear bolt piece so that a front bolt piece of proper mass can be matched to the energy of ammunition to be fired. The front and rear bolt pieces when coupled define a continuous extended longitudinal passage which receives the rear breech end portion of the firearm barrel therethrough to reduce the projected length of the barrel.

A modular two-piece bolt system for firearms with blowback actions provides a rear bolt piece which detachably couples to plural different front bolt pieces each of different mass. The front bolt pieces have a similar configuration and common coupling interface which forms an interlocked relationship with a complementary configured coupling interface on the rear bolt piece to prevent axial separation of the pieces when the action of the firearm is cycled. The system allows various front bolt pieces to be selected and used interchangeably with the rear bolt piece so that a front bolt piece of proper mass can be matched to the energy of ammunition to be fired. The front and rear bolt pieces when coupled define a continuous extended longitudinal passage which receives the rear breech end portion of the firearm barrel therethrough to reduce the projected length of the barrel.

A modular two-piece bolt system for firearms with blowback actions provides a rear bolt piece which detachably couples to plural different front bolt pieces each of different mass. The front bolt pieces have a similar configuration and common coupling interface which forms an interlocked relationship with a complementary configured coupling interface on the rear bolt piece to prevent axial separation of the pieces when the action of the firearm is cycled. The system allows various front bolt pieces to be selected and used interchangeably with the rear bolt piece so that a front bolt piece of proper mass can be matched to the energy of ammunition to be fired. The front and rear bolt pieces when coupled define a continuous extended longitudinal passage which receives the rear breech end portion of the firearm barrel therethrough to reduce the projected length of the barrel.

A modular two-piece bolt system for firearms with blowback actions provides a rear bolt piece which detachably couples to plural different front bolt pieces each of different mass. The front bolt pieces have a similar configuration and common coupling interface which forms an interlocked relationship with a complementary configured coupling interface on the rear bolt piece to prevent axial separation of the pieces when the action of the firearm is cycled. The system allows various front bolt pieces to be selected and used interchangeably with the rear bolt piece so that a front bolt piece of proper mass can be matched to the energy of ammunition to be fired. The front and rear bolt pieces when coupled define a continuous extended longitudinal passage which receives the rear breech end portion of the firearm barrel therethrough to reduce the projected length of the barrel.

An action system for reducing recoil and muzzle rise in firearms is provided. The action system includes an outer housing having an internal cavity, a buffer tube in operable communication with a bolt carrier group of a firearm, and a slidable buffer within the buffer tube. A lever arm, pivotally secured within the outer housing, is operably connected to the buffer and moves radially under the buffer's force. A spring in the cavity engages with the lever arm, compressing as the lever arm is acted upon by the linear force produced by a bolt carrier group until the spring force exceeds the linear force, thus forcing the buffer in a direction opposite the direction of the linear force.

An action system for reducing recoil and muzzle rise in firearms is provided. The action system includes an outer housing having an internal cavity, a buffer tube in operable communication with a bolt carrier group of a firearm, and a slidable buffer within the buffer tube. A lever arm, pivotally secured within the outer housing, is operably connected to the buffer and moves radially under the buffer's force. A spring in the cavity engages with the lever arm, compressing as the lever arm is acted upon by the linear force produced by a bolt carrier group until the spring force exceeds the linear force, thus forcing the buffer in a direction opposite the direction of the linear force.