Firearm buffer tube

1. A method for providing recoil mitigation for a firearm having a receiver, the method comprising:

providing a hollow, cylindrical recoil mitigation tube partially closed at one end configured for mounting a stock thereon;

disposing a recoil absorbing spring in said recoil mitigation tube in said closed end;

reciprocatingly mounting a recoil piston inside said recoil mitigation tube engaging said recoil absorbing spring; and

providing a mounting member on said recoil piston configured for lockingly mounting the mounting member on the firearm receiver;

wherein the recoil mitigation tube and the piston are configured to permit motion of the receiver relative to the stock during firing;

forming a stop pin on said recoil piston;

forming a stop groove said recoil mitigation tube; and

slidingly disposing said stop pin inside said stop groove, so as to limit movement of said recoil piston.

2. The method according to claim 1 , further comprising:

forming on said mounting member an adapter for mounting said mounting member in the receiver of a firearm.

3. The method according to claim 1 , further comprising adjusting a degree of recoil mitigation of said recoil absorbing spring.

4. A replacement buffer tube for a firearm having a receiver, the buffer tube comprising:

a hollow, cylindrical recoil mitigation tube partially closed at one end allowing mounting of a replacement stock thereon; and

an adjustable recoil absorbing mechanism providing reciprocating motion between the receiver and said stock during firing, said mechanism including:

a recoil piston reciprocatingly mounted inside said recoil mitigation tube, said recoil piston including a mounting member configured for lockingly mounting on the firearm receiver so that the stock and the receiver move relative to one another during firing; and

a recoil absorbing spring disposed in said recoil mitigation tube and engaging said recoil piston and configured to mitigate motion of the receiver relative to the stock during firing;

further comprising means for adjusting a degree of recoil mitigation of said recoil absorbing spring;

wherein said means for adjusting a degree of recoil mitigation includes an adjustable tension nut mounted on a tension adjusting screw coupled to said spring for adjusting the tension of said spring.

5. The buffer tube of claim 4 , wherein said mounting member includes an adapter for lockingly mounting said mounting member in the receiver of a firearm.

6. The buffer tube according to claim 4 , wherein said mounting member is integrally formed with said recoil piston.

7. A replacement buffer tube for a firearm having a receiver, the buffer tube comprising:

a hollow, cylindrical recoil mitigation tube partially closed at one end allowing mounting of a replacement stock thereon; and

an adjustable recoil absorbing mechanism providing reciprocating motion between the receiver and said stock during firing, said mechanism including:

a recoil piston reciprocatingly mounted inside said recoil mitigation tube, said recoil piston including a mounting member configured for lockingly mounting on the firearm receiver so that the stock and the receiver move relative to one another during firing; and

a recoil absorbing spring disposed in said recoil mitigation tube and engaging said recoil piston and configured to mitigate motion of the receiver relative to the stock during firing;

said recoil mitigation tube further includes a stop groove; and

said recoil piston includes a stop pin slidingly disposed inside said stop groove, so as to limit movement of said recoil piston.

8. The buffer tube according to claim 7 , further comprising means for adjusting a degree of recoil mitigation of said recoil absorbing spring.

9. The buffer tube of claim 7 , wherein said mounting member includes an adapter for lockingly mounting said mounting member in the receiver of a firearm.

10. The buffer tube according to claim 7 , wherein said mounting member is integrally formed with said recoil piston.