Crosman Challenger PCP Competition Pellet Rifle .177 caliber Reversible sidelever Precharged pneumatic Floating Lothar Walther barrel 3000 PSI air reservoir Over 300 shots per fill Regulated Fully-adjustable synthetic stock Max. velocity: 580 FPS Two-stage match-grade trigger with adjustable shoe Meets requirements for National Standard three-position air rifle Hooded front aperture sight Diopter rear sight with micro-click adjustments 11mm dovetail optics rail Bottom accessory slot Precision-adjustable sliding forend hand rest Precision-adjustable rubber buttpad Precision-adjustable cheekpiece Integral manometer