Firing mechanism of a firearm

1. A firing mechanism for a firearm comprising:

a frame;

a barrel attached to the frame and including a conical taper at a rear end of the barrel;

a cylinder attached to the frame and including a chamber and a bore through the cylinder and a conically tapered counter bore at a front end of the chamber closest to the barrel; and

a spring in the bore to force the cylinder backward.

2. The firing mechanism according to claim 1 , wherein

when a trigger is pulled, the cylinder is forced forward by a latch pin, the spring is compressed, and the conically tapered counter bore fits over the conical taper at the rear end of the barrel and seals or substantially seals the barrel and the conically tapered counter bore, and

when the trigger returns to an idle position, the cylinder is forced rearward by the spring, and the latch pin is forced rearward by the cylinder.

3. The firing mechanism according to claim 1 , further comprising a latch pin lever connected to a trigger to move as the trigger rotates.

4. The firing mechanism according to claim 3 , wherein, when the trigger is pulled, a latch pin is forced forward by a latch pin lever.

5. The firing mechanism according to claim 1 , wherein the cylinder includes a plurality of chambers each including the conically tapered counter bore to accept a cartridge.

6. The firing mechanism according to claim 1 , further comprising a keeper that retains the spring in the bore.

7. The firing mechanism according to claim 6 , wherein the spring is compressed between the keeper and the cylinder when a trigger is pulled.

8. The firing mechanism according to claim 3 , wherein the latch pin lever includes a hole that fits over a protrusion in the frame and is configured to pivot about the protrusion.

9. The firing mechanism according to claim 3 , wherein the latch pin lever is in direct contact with a latch pin.

10. The firing mechanism according to claim 3 , wherein a direction of movement of the latch pin lever is perpendicular or substantially perpendicular to a direction of movement of a latch pin.

11. The firing mechanism according to claim 3 , wherein

the latch pin lever includes an angled surface such that a vertex of an angle of the angled surface is in a direction toward a latch pin, and

the angled surface is in slideable contact with the latch pin.

12. The firing mechanism according to claim 3 , wherein the latch pin includes a groove that is in slideable contact with the latch pin lever.

13. A method of firing a firearm comprising:

when a trigger is pulled, forcing a cylinder forward and compressing a spring in a portion of the cylinder; and

when the trigger is returned to an idle position, forcing the cylinder rearward by releasing tension on the spring, wherein

the forcing the cylinder forward causes a conically tapered counter bore on the cylinder to fit over a conical tapered portion of a barrel and to seal or substantially seal the barrel and the conically tapered counter bore.

14. The method of firing a firearm according to claim 13 , further comprising:

when the trigger is pulled, forcing a latch pin forward toward the cylinder.

15. The method of firing a firearm according to claim 14 , further comprising:

when the trigger is pulled, forcing a latch pin lever toward the latch pin.

16. The method of firing a firearm according to claim 13 , wherein the cylinder including the conically tapered counter bore accepts a cartridge.

17. The method of firing a firearm according to claim 13 , wherein when the trigger is pulled, the spring is compressed between a keeper and the cylinder.

18. The method of firing a firearm according to claim 15 , wherein the latch pin lever includes a hole that fits over a protrusion in a frame to pivot about the protrusion.

19. The method of firing a firearm according to claim 15 , wherein a direction of movement of the latch pin lever is perpendicular or substantially perpendicular to a direction of movement of the latch pin.