Hatsan Hercules Bully PCP Air Rifle Precharged Pneumatic Bullpup design Sidelever action Available in .177, .22, .25, .30, .35 and .45 caliber QuietEnergy fully-shrouded barrel and integrated sound moderator, up to 50% quieter Precision rifled and choked barrel for accuracy (.45 caliber barrel is not choked) 500cc carbon fiber air bottle mounted in the forearm 250 BAR/ 3,625 PSI Fill Pressure Includes 3 magazines Magazine storage for two magazines in the stock Standard Hatsan Fill probe (threaded to 1/8" BSPP male) Synthetic ambidextrous bullpup stock "Easy Adjust" check comb-stock equipped with integrated elevation adjustment button Picatinny accessory rail beneath the forearm Built-in pressure gauge to monitor the cylinder pressure Long combination optics rail accepts both 11mm and Picatinny scope mounts "Anti-double pellet feed" mechanism prevents more than one pellet loading into barrel Detachable flip-up and adjustable sights with Trueglo fiber optics 2-stage adjustable trigger for trigger travel and trigger load Shots at optimal velocity: .177 (45), .22 (40), .25 (36), .30 (15), .35 (13), .45 (8) Fitted sling swivels .177, .22, .25, .30, & .35 magazines are 13mm deep. .45 magazine is 16mm deep. Tech Tip: The .45 caliber barrels are NOT choked to provide better performance with cast lead ammo.