electronic circuit is reset to wait for another signal from switch 86 and the gun will load its next projectile in this manner the electrical control circuit controls a firing operation of the compressed gas gun a description of the gun 39 s operation is now illustrated the function of the pneumatic sear is best illustrated with reference to fig3 and 4 which depict the movements of piston 32 more clearly compressed gas enters the high pressure regulator 50 through the input port 49 the high pressure regulator is generally known in the art and regulates the compressed gas to about 200 300 p s i these parameters may be changed and adjusted using adjustment screw 51 which is externally accessible to a user for adjustment of the gas pressure in the high pressure regulator this high pressure gas is used to actuate the firing valve and launch a projectile from the barrel 10 of the compressed gas gun upon passing through high pressure regulator 50 compressed gas is fed both through gas transport tube 7 to the valve chamber 36 via manifold 8 and through port 5 to the low pressure regulator 21 low pressure regulator 21 is also generally known in the art compressed gas is regulated down to approximately between 50 125 p s i by the low pressure regulator and is also adjusted by an externally accessible adjustment screw cap 28 which is preferably externally manually adjustable for easy and quick adjustment compressed gas then passes through port 25 into manifold 41 where electro pneumatic valve 30 directs it into cylinder housing 31 through low pressure passages 74 and low pressure gas pushes against first surface 72 on piston 32 driving it rearwards and seating seal 70 against valve.