I was looking at a .25 caliber Nitro Pistol pellet rifle if i understand correctly they have a high pressure nitrogen filled piston instead of a spring do they last long or will they leak ?
Form the reviews people seemed to like them i was wondering about long term i have had a Sheridan 5mm pump gun for 30 years nd it still works great but i am looking for a bit faster second shot without going to CO2 or compressed air.