Compressed gas gun

1. A compressed gas gun, comprising:

a housing including a portion configured to receive compressed gas from a source of compressed gas;

a bolt guide;

a bolt having a decreased diameter portion adjacent a forward portion of the bolt and an increased diameter portion rearward of the decreased diameter portion, the bolt having a passage therethrough, the bolt slidably arranged within the housing and moveable between a rearward position and a forward position relative to the bolt guide, the bolt having a forward bolt opening adjacent the forward portion of the bolt, wherein movement of the bolt from the rearward position to the forward position opens a flow path providing communication between a compressed gas receiving portion of the housing and the forward bolt opening, and wherein the bolt is configured to move to the rearward position under the force of compressed gas; and

a trigger-actuated valve configured to regulate the flow of compressed gas to at least one surface of the bolt.

2. The compressed gas gun of claim 1 , wherein the bolt guide comprises a hollow portion with at least one opening in a wall of the bolt guide adjacent the hollow portion configured to allow communication of compressed gas between an interior of the bolt guide and an exterior of the bolt guide.

3. The compressed gas gun of claim 1 , wherein the bolt guide further comprises one or more ports adjacent a hollow portion of the bolt guide configured to communicate compressed gas to the forward opening of the bolt.

4. The compressed gas gun of claim 1 , wherein the valve is an electro-magnetic valve.

5. The compressed gas gun of claim 1 , further comprising a control circuit for controlling a firing operation of the gun.

6. The compressed gas gun of claim 1 , wherein the bolt receives at least a portion of the bolt guide within the passage of the bolt.

7. The compressed gas gun of claim 1 , wherein the housing includes a removable end cap adjacent a rearward portion of the housing configured to permit removal of the bolt.

8. The compressed gas gun of claim 1 , further comprising a sealing member arranged in communication with a surface of the bolt, and wherein the bolt is moveable relative to the sealing member.

9. A pneumatic assembly for a compressed gas gun, comprising:

a bolt guide disposed in a housing of the compressed gas gun, the bolt guide configured to receive compressed gas from a source of compressed gas, the bolt guide further comprising one or more ports configured to allow the passage of compressed gas from the bolt guide to a forward portion of the housing; and

a bolt slidably arranged on at least a portion of the bolt guide, the bolt moveable between a first position and a second position, the bolt having a decreased diameter portion adjacent its forward end and an increased diameter portion rearward of the decreased diameter portion;

wherein the bolt is configured to move to the first position under the force of compressed gas, and wherein movement of the bolt relative to the bolt guide releases compressed gas from the compressed gas gun to fire a projectile, and

a trigger actuated valve configured to control the flow of compressed gas to operate the bolt.

10. The pneumatic assembly of claim 9 , where the valve is an electro-magnetic valve.

11. The pneumatic assembly of claim 10 , further comprising a control circuit for controlling a firing operation of the gun.

12. The pneumatic assembly of claim 9 , wherein the bolt receives at least a portion of the bolt guide within a passage of the bolt.

13. The pneumatic assembly of claim 9 , wherein the housing includes a removable end cap adjacent a rearward portion of the housing configured to permit removal of the bolt.

14. The pneumatic assembly of claim 9 , further comprising a sealing member arranged in communication with a surface of the bolt, and wherein the bolt is moveable relative to the sealing member.