Hämmerli AR20 air rifle uses a highpressure compressed air system that requires specific, regulated cylinders. Air Cylinder Specifications Pressure Rating: 300 BAR (4,351 PSI) maximum fill pressure.
Compatibility: The AR20 uses interchangeable cylinders shared with the Walther LG series (LG200, LG300, LG400, and 1250 Dominator).
Capacity:
Aluminum: Weighs roughly 450–460 grams with a 154cc to 181cc volume, yielding approximately 350 to 600 shots per fill.
Steel: Heavier, standard length (360 mm) or maxi-length (460 mm), which adds frontend weight depending on the shooter's balance preference.
Built-in Features: Cylinders come equipped with a front-end manometer (pressure gauge) to monitor air levels.