A magnetic shock absorbing buffer system having a buffer element with a buffer element cavity having internal buffer threads and a buffer cavity shoulder; a plunger element having a plunger head that is slidable within the buffer element cavity, wherein a plunger body extends through the buffer cavity second open end, and wherein a plunger shoulder contacts the buffer cavity shoulder to maintain the plunger head within the buffer element cavity; an adjustment screw, wherein external adjustment screw threads interact with the internal buffer threads to allow the adjustment screw to be adjustably positioned within the buffer cavity; and at least one dynamic magnet and at least one static magnet positioned within the buffer cavity, wherein like poles face one another such that the magnets act to repel one another within the buffer cavity, and wherein the adjustment screw maintains the magnets within the buffer cavity.

A magnetic shock absorbing buffer system having a buffer element with a buffer element cavity having internal buffer threads and a buffer cavity shoulder; a plunger element having a plunger head that is slidable within the buffer element cavity, wherein a plunger body extends through the buffer cavity second open end, and wherein a plunger shoulder contacts the buffer cavity shoulder to maintain the plunger head within the buffer element cavity; an adjustment screw, wherein external adjustment screw threads interact with the internal buffer threads to allow the adjustment screw to be adjustably positioned within the buffer cavity; and at least one dynamic magnet and at least one static magnet positioned within the buffer cavity, wherein like poles face one another such that the magnets act to repel one another within the buffer cavity, and wherein the adjustment screw maintains the magnets within the buffer cavity.

A linear-to-rotary converter assembly includes a housing having a first portion, a second portion, and a bore in which a plunger is slidably disposed. The plunger includes a plunger body having threads and a plunger boss extending from the housing. At least one of a one-way bearing or a disk is disposed within the housing bore. A rod is disposed within the housing bore and has a first portion having threads engaging the plunger threads and a second portion extending through the at least one of the one-way bearing or the disk. At least one magnet is disposed within the housing adjacent to the one-way bearing or the disk. Linear movement of the plunger between a firing position and a recoil position rotates the rod and the one-way bearing or the disk in a first direction as the magnet acts on the at least one of the one-way bearing or the disk.

A linear-to-rotary converter assembly includes a housing having a first portion, a second portion, and a bore in which a plunger is slidably disposed. The plunger includes a plunger body having threads and a plunger boss extending from the housing. At least one of a one-way bearing or a disk is disposed within the housing bore. A rod is disposed within the housing bore and has a first portion having threads engaging the plunger threads and a second portion extending through the at least one of the one-way bearing or the disk. At least one magnet is disposed within the housing adjacent to the one-way bearing or the disk. Linear movement of the plunger between a firing position and a recoil position rotates the rod and the one-way bearing or the disk in a first direction as the magnet acts on the at least one of the one-way bearing or the disk.

A semi-automatic or automatic rifle comprising a barrel attached to and upper receiver and including a compressible bolt carrier extension system. The compressible bolt carrier extension system includes a bolt carrier, an extension spring, two pins, and a reciprocation bolt carrier extension piece. As a whole, the compressible bolt carrier extension system makes possible the use of elongated upper and lower receivers to be used for chambering long-action or other center fire cartridges for use with AR rifles such as the M-16, and M4 etc., eliminating the need for any buffer or buffer tubes other than those commercially available. A further advantage of the compressible bolt carrier extension system is the reduction of felt recoil as the system fully loads during the recoil stroke as it pushes against the buffer absorbing additional recoil energy. The system can be incorporated into firearms using a variety of cartridges.

A semi-automatic or automatic rifle comprising a barrel attached to and upper receiver and including a compressible bolt carrier extension system. The compressible bolt carrier extension system includes a bolt carrier, an extension spring, two pins, and a reciprocation bolt carrier extension piece. As a whole, the compressible bolt carrier extension system makes possible the use of elongated upper and lower receivers to be used for chambering long-action or other center fire cartridges for use with AR rifles such as the M-16, and M4 etc., eliminating the need for any buffer or buffer tubes other than those commercially available. A further advantage of the compressible bolt carrier extension system is the reduction of felt recoil as the system fully loads during the recoil stroke as it pushes against the buffer absorbing additional recoil energy. The system can be incorporated into firearms using a variety of cartridges.

Man portable weapons include integrated electronics that calculate orientation and movement in addition to providing that data to a user's heads-up displays (HUD) as well as to group and area networks. By passing data to a HUD, the user is able to see, virtually, the flight path, point of impact and other ballistic data as well as data representing the condition and performance of the weapon for any rounds fired. The HUD also displays the relative position of other members of the team, last known enemy area of operation and other useful parameters from the man portable weapons of the other team members through the network. The electronics may be integrated within the main components of any suitable man portable weapon in a non-intrusive way as to have no effect on the firing mechanism of the small arm when it is fully assembled.

Man portable weapons include integrated electronics that calculate orientation and movement in addition to providing that data to a user's heads-up displays (HUD) as well as to group and area networks. By passing data to a HUD, the user is able to see, virtually, the flight path, point of impact and other ballistic data as well as data representing the condition and performance of the weapon for any rounds fired. The HUD also displays the relative position of other members of the team, last known enemy area of operation and other useful parameters from the man portable weapons of the other team members through the network. The electronics may be integrated within the main components of any suitable man portable weapon in a non-intrusive way as to have no effect on the firing mechanism of the small arm when it is fully assembled.

An automatic rifle (10) includes a receiver (12), a bolt assembly (110), a trigger mechanism (106), a buttstock assembly (100), a barrel assembly (104), and a grip assembly (102). The receiver (12) is characterized by being a unitary body that houses the bolt assembly (110) and the trigger mechanism (106), and the receiver (12) is configured for the connection thereto of the buttstock assembly (100), the barrel assembly (104), and the grip assembly (102).

A backplate for a rifle may include a buffer tube engagement ring and an engagement tab operably coupled to the buffer tube engagement ring. The engagement tab may include a receiver engagement face and an exposed face that is opposite the receiver engagement face. The receiver engagement face may include a backplate protrusion extending away from a surface of the receiver engagement face, and a spring assisted guide spaced apart from the backplate protrusion. The spring assisted guide may include a cylindrically shaped cavity configured to receive and retain a distal end of a detent spring of the rifle.