Patent ID: 8434252

Claim:
A recoil absorption system for a long gun having a receiver and a buffer tube with a buffer tube axis, a detent slot, and at least one detent hole located at a slot bottom of the detent slot, comprising: a buffer tube insert configured to fit within the detent slot of the buffer tube to cover at least one detent hole; a stock with a buffer tube bore configured to receive there within the buffer tube, the stock configured to slide along the buffer tube axis, and a detent pin extending transversely into the buffer tube bore and biased into the detent slot when the buffer tube is inserted into the buffer tube bore; and a shock absorber with a first end secured to the stock and a second end connected with a receiver, the shock absorber biasing the stock away from a receiver when under compression and providing recoil absorption through compression of the shock absorber; wherein the buffer tube insert prevents the detent pin from engaging the detent hole, the buffer tube insert positioned within the detent slot providing a bounded area through which the detent pin is restricted to travel as the stock axially slides along the buffer tube axis, the travel of the detent pin limiting the resulting travel of the stock relative to the buffer tube wherein the bounded area provided by the buffer tube insert within the detent slot is divided into at least two sub-bounded areas which are smaller than the bounded area, when the detent pin is positioned within a first sub-bounded area it is permitted to slide only along the first sub-bounded area and when the detent pin is positioned within a second sub-bounded area it is permitted to slide only along the second sub-bounded area.