Paintball gun and firing assembly

1. A firing assembly for a paintball gun comprising:

a dynamic piston assembly slidably mounted on a stationary guide assembly, said dynamic piston assembly having a load position and a firing position, said dynamic piston assembly having a compressed gas storage compartment therein that is configured to receive compressed gas from a compressed gas supply when said piston assembly is in said load position; said paintball gun having a breech for receiving a paintball to be fired, said breech being sealed from said gas storage compartment when said piston assembly is in said load position with said paintball in said breech; said dynamic piston assembly sliding forward relative to said stationary guide assembly to said firing position when said gun is about to fire, thereby simultaneously allowing compressed gas to pass from said storage compartment to said breech to propel said paintball from said breech.

2. A firing assembly as claimed in claim 1 wherein said gas storage compartment moves forward relative to said stationary guide assembly upon firing of said gun.

3. A firing assembly as claimed in claim 1 wherein said gas storage compartment is located substantially within cylindrical boundary, said boundary having a diameter substantially equal to a diameter of a paintball and having the same longitudinal center axis as said breech and said dynamic piston assembly.

4. A firing assembly as claimed in claim 1 wherein said firing assembly is located within a body and a trigger frame is mounted beneath said body, said trigger frame having a groove extending along a top thereof, said body closing off said groove to form an air passage with said groove between a front of said trigger frame and a rear of said body, there being a connector to receive compressed air located at said rear of said body.

5. A firing assembly as claimed in claim 1 wherein said firing assembly is located within a body, said body having a trigger frame connect along a bottom of said body, said trigger frame having a bore located therein near a top rear of said trigger frame, said bore containing a ram that is slidably mounted in said bore, said ram being connected to said piston assembly, said bore having a control valve located to pass compressed gas into a front of said bore to force said ram rearward after said firing assembly has been moved to the firing position, said control valve thereby returning said piston assembly to said load position.

6. A firing assembly as claimed in claim 3 wherein said piston assembly is constructed as one piece.

7. A firing assembly as claimed in claim 6 wherein said stationary guide assembly is constructed as one piece.

8. A firing assembly for a paintball gun comprising a piston assembly slidably mounted on a stationary guide assembly, said piston assembly having a rest position and a firing position, said piston assembly having a compressed gas storage compartment therein that is configured to receive compressed gas from a compressed gas supply when said piston assembly is in said rest position, said paintball gun having a breech for receiving a paintball to be fired, said breech being separated longitudinally from said storage compartment when said piston assembly is in said rest position with said paintball in said breech, said piston assembly sliding forward relative to said stationary guide assembly to said firing position when said assembly is activated, thereby allowing compressed gas to flow from said storage compartment longitudinally into said breech to propel said paintball forward longitudinally out of said breech.

9. A firing assembly as claimed in claim 8 wherein said piston assembly is moved forward to said firing position by pressure from said compressed gas.

10. A firing assembly as claimed in claim 8 wherein said gas storage compartment is located substantially within a cylindrical boundary, said boundary having a diameter substantially equal to a diameter of a paintball, and having the same longitudinal centre axis as said breech and said dynamic piston assembly.

11. A firing assembly for a paintball gun comprising:

(a) a piston assembly slidably mounted on a stationary guide assembly, said piston assembly having a rest position and a firing position, said piston assembly having a compressed gas storage compartment located therein, said storage compartment being configured to receive compressed gas from a compressed gas supply when said piston assembly is in said rest position, said paintball gun having a breech for receiving a paintball to be fired, said breech being sealed off from said storage compartment when said piston assembly is in a rest position;

(b) when a paintball is in said breech and said piston assembly is sliding forward relative to said guide assembly to said firing position, said compressed gas having access to said breech and flowing from said storage compartment into said breech to propel said paintball forward, said breech having an inside diameter sized to receive and propel said paintball, said compressed air storage compartment having an inside diameter that is substantially the same as an inside diameter of said breech.

12. A firing assembly as claimed in claim 11 wherein said gas storage compartment is located substantially within a cylindrical boundary, said boundary having a diameter substantially equal to a diameter of a paintball, and having the same longitudinal centre axis as said breech and said dynamic piston assembly.

13. A paintball gun comprising a firing assembly, said firing assembly having a dynamic piston assembly slidably mounted on a stationary guide assembly, said dynamic piston assembly having a load position and a firing position, said dynamic piston assembly having a compressed gas storage compartment that is configured to receive compressed gas from a compressed gas supply when said piston assembly is in said load position; said paintball gun having a breech for receiving a paintball to be fired, said breech being sealed from said gas storage compartment when said piston assembly is in said load position with a paintball in said breech; said dynamic piston assembly sliding forward relative to said stationary guide assembly to said firing position, thereby simultaneously allowing compressed gas to pass out of said piston assembly to said breech to propel said paintball forward from said breech.

14. A paintball gun as claimed in claim 13 , said gas storage compartment is located substantially within a cylindrical boundary, said boundary having a diameter substantially equal to the diameter of a paintball having the same longitudinal centre axis as said breech and said dynamic piston assembly.

15. A paintball gun as claimed in claim 14 , wherein said firing assembly is located within a body and a trigger frame is mounted beneath said body, said trigger frame having a groove extending along a top thereof, said body closing off said groove to form an air passage with said groove, between a front of said trigger frame and a rear of said body, there being a connector to receive compressed air located at a rear of said body.

16. A firing assembly as claimed in claim 15 , wherein said trigger frame has a bore located therein near a top rear of said trigger frame, said bore containing a ram that is slidably mounted in said bore, said ram being connected to said piston assembly, said bore having a control valve located to pass compressed gas into a front of said bore to force said ram rearward after said firing assembly has been moved to the firing position, said control valve thereby returning said piston assembly to said load position.

17. A paintball gun as claimed in claim 16 , wherein said dynamic piston assembly is formed from one piece.

18. A paintball gun as claimed in claim 17 , wherein said dynamic piston assembly is formed as one piece.