One of the greatest revolutions in spring powered air rifle technology was the development the gas spring, or gas ram piston. This is a technology that replaces the traditional coil spring that resides in the receiver of an air rifle with a gas "spring". The end result is a slght gain in power when compared to a similar spring but most notably, a much smoother cocking stroke and less vibration during the shot. Power, ease of use, and better accuracy are three great reasons to look for a gas piston power plant for your next airgun purchase. Our T.N.T Gas Piston and ReAxis Gas Piston air rifles set that standard for gas piston air rifle performance. Looking for the best deal possible? Click on our pop-up and sign up for our SMS messaging service or click here to sign up for our weekly email!