Patent ID: 7581537

Claim:
A paintball gun with a pressure gauge device comprising: a rear cap having a first end and a second end, said first end being formed with a compartment, said second end being provided with a piston block, a first air sealing ring being provided on said piston block, a second air sealing ring being provided on said rear cap, a first air passage being formed between said first air sealing ring and said second air sealing ring; a pressure gauge accommodated in said compartment of said rear cap and comprising a guiding rod, two sealing rings being provided on said guiding rod, a second air passage being formed between said two sealing rings, said second air passage interconnecting with said first air passage; and a barrel comprising a triggering block therein, said barrel having a rear end to connect with said rear cap, said triggering block engaging with said rear cap, said triggering block having a third air passage at a rear end thereof, said third air passage interconnecting with said first air passage.