Pressure gauge
with a hand pump
Pressure gauge
One that you have to manually pump the forarm up to build enough pressure in the air tank to fire the gun.
If you are asking about Air Soft, then most likely not. But if you are asking about a BB or pellet gun then Yes it is possible depending on the power of the air gun and where you are struck.
Take it to a authorized repair center.
If you want to build your own air gun I suggest you search" You tube" and look for "Home made air guns'
Gun with a spring force acts. Hydraulic power water gun works. Pneumatic power iscompressed air.
"The Power of Air: Investigating the Effects of Air Pressure"
Either you have a defect in the gun/canister or you havn't charged your canister. If you just got your gun you should charge it. Usually they do not come with air in them.
Any gun with a High Pressure System (which is basically all of them) can use this tank.
Because of the nature of the PCP power plant I suggest you search the net and look for air gun repair or air gun tune-up. There are shops that tune up air rifles and modify them.