Bullpup design, manual loading, sidelever action, pre-charged pneumatic (PCP) air rifle. Precision rifled, choked barrel for accuracy, threaded for 1/2" UNF sound moderator & fitted muzzle cap. Available in .177 (4.5mm), .22 (5.5mm) and .25 (6.35mm) caliber. Detachable 14-shot magazine in .177, 12-shot magazine in .22 and 10 shot magazine in .25 caliber. Includes 2 magazines and a quick-fill nozzle Black anodized aluminum receiver. Picatinny rail for both 11mm and 22mm scope mounts. Ambidextrous bullpup synthetic stock. Picatinny rail beneath the forearm. "EasyAdjust" Elevation Comb - Stock equipped with integrated elevation adjustment button. Elevation & cast adjustable rubber butt pad. Checkering on grip & forend for better control & feel. 165cc volume steel air cylinder (not detachable) Built-in pressure gauge in the forearm to monitor the cylinder pressure. Patented anti-knock system to prevent gas wastage when rifle is knocked or bounced. Manual safety. Quattro Trigger: 2-stage full adjustable match trigger for trigger travel and trigger load.