Captured spring assembly for a firearm

A buffer assembly for a rifle having a bolt carrier having a rear end and defining an aperture, the assembly comprising:

• a rod having a forward end and a rearward end;
• wherein the aperture of the bolt carrier receives the forward end of the rod when the bolt carrier is in a rearward retracted position;
• a movable buffer that defines an aperture that receives the forward end of the rod and is operable to reciprocate between a forward battery position and a rearward retracted position;
• the buffer having a forward end abutting the rear end of the bolt carrier;
• a coil spring that encompasses the rod;
• wherein the forward end of the rod has a limit element having a head that is larger in diameter than the rod;
• wherein the buffer has an internal limit element that is larger in diameter than the rod;
• and
• wherein the internal limit element has at least one portion that is smaller in diameter than the limit element head, but also larger in diameter than the rod.

A buffer assembly for a firearm, the assembly comprising:

• an elongated rod having a forward end and a rearward end;
• a cylindrical buffer that defines a bore that receives the rod and is operable to reciprocate between a forward battery position and a rearward retracted position;
• a coil spring that encompasses the rod;
• wherein the forward end of the rod has a limit element having a bead that is larger in diameter than the rod;
• wherein the buffer has an internal limit element that is larger in diameter than the rod;
• wherein the internal limit element has at least one portion that is smaller in diameter than the limit element head, but also larger in diameter than the rod;
• and
• wherein the buffer further comprises:
• a cylindrical slider that defines an aperture that receives the forward end of the rod and has an exterior surface;
• a weight encompassing a portion of the exterior surface;
• and
• a snap ring removably connected to the exterior surface of the slider to retain the weight on the slider.

A buffer assembly for a firearm, the assembly comprising:

• an elongated rod having a forward end and a rearward end;
• a cylindrical buffer that defines a bore that receives the rod and is operable to reciprocate between a forward battery position and a rearward retracted position;
• the buffer including a body portion and a weight element on the body portion with a resilient element intervening between the weight and the body portion,
• a coil spring that encompasses the rod;
• a spring stop attached to the rearward end of the rod, the spring stop having a diameter larger than the spring diameter;
• wherein the spring stop comprises:
• a rigid end cap that is attached to the rearward end of the rod;
• and
• a resilient bushing that is mounted on a forward portion of the end cap and defines
• an aperture that receives the rearward end of the rod;
• wherein the forward end of the rod has a limit element having a head that is larger in diameter than the rod;
• wherein the buffer has an internal limit element that is larger in diameter than the rod;
• and
• wherein the internal limit element has at least one portion that is smaller in diameter than the limit element head, but also larger in diameter than the rod.