Hatsan Speedfire Nitropiston .22 (5.5mm) Rifle

Vortex gas piston powerplant
Breakbarrel
RPM (Rapid Performance Mag) Magazines: 10 shots in .22
Fluted steel barrel
Quattro 2-stage adjustable match trigger with metal trigger blade (adjustable for trigger pull weight, first stage, second stage, and length of travel)
Combo Scope Mounting Rail: 11mm dovetail and Picatinny rail
Flip-up TruGlo red fiber optic front sight
Fully adjustable TruGlo green fiber optic rear sight
Automatic safety
Ambidextrous synthetic stock
EZ-Load action system cocks and loads the pistol in a single motion
Includes Optima 3-9×40 scope with rings and 2 magazines
These are the benefits of a Vortex gas piston engine over a mainspring Metal-wound:

Smoother cocking

Smoother shooting

No spring torque

No spring fatigue, even if you leave it cocked for hours.

Works perfectly in cold climates.

Lasts longer than a metal spring.