Hammerli AR20 Pro deep blue air rifle Precharged pneumatic Bolt-action Single-shot Ambidextrous cocking piece with release button Wide loading recess with precision feed Lothar Walther match barrel Deep blue aluminum stock with variable stock length, cheekpiece height and fore-end height Ambidextrous grip and stock Vertically adjustable buttpad Shorten or lengthen the stock with included spacers (41.65 to 43.66) Front sight globe accepts 3.8mm inserts (1 insert included) Fully adjustable basic competition diopter rear sight Up to 31.496 (800mm) sight length 19.685 (500mm) barrel 8.75 lbs. (3970 grams) 200 and 300 bar fill pressures (2,900 psi and 4,351 psi, respectively) Walther removable aluminum air cylinder with integral manometer (air pressure gauge) 2-stage trigger can be adjusted for pressure point, pull weight, stop and slack T-rail for 3-position competition Approximately 350 shots per fill Meets ISSF requirements Includes DIN adapter for 300 bar and 200 bar, 200-gram stock weights (2), 1 aperture insert, 4 tools, spacers for forearm and buttstock, and various lengths of screws for the spacers Regulated at 70 bar