SIG Sauer MCX Rattler Canebrake Pellet Rifle .177 caliber Semi-automatic 30-round pellet magazine Max. velocity: 600 FPS Plastic buttpad Flat blade trigger Textured pistol grip Flip-up front and rear sights Long Picatinny optics rail M-LOK handguard Shrouded barrel Weight: 7.6 lbs. (with magazine) Barrel length: 12" Overall length: 30.13" CO2 model uses one 88- or 90-gram CO2 cylinder PCP model includes 13ci/3000psi Air Cylinder with Regulated 1100psi/76bar Output