SPECIFICATIONS: Operation: Bolt ActionBuild: Metal Receivers, Barrel, Rail Interface System / Rubber Pistol GripFiring Modes: Semi-Automatic, Functional SafetyMuzzle Velocity: 395 - 410 FPS (W/ 0.20G BBs)Magazine: 78 RoundsHop-Up: AdjustableWeight: 10 LBSOverall Length: 33 Inch - 43 InchColor: BlackFEATURES: Officially licensed by Remington Arms Company CNC die cast aluminum upper and lower receivers Full metal 545mm picatinny rail system w/ eight mounting surfaces Full metal outer barrel for durability Metal 20mm monolithic upper rail for optic attachments Ergonomic adjustable stock and cheek riser for comfort and stability TX systems spring cocking bolt change between gas of CO2 bolts Built-in slots on the rear position for sling attachments Fully adjustable hop-up system Aluminum cylinder and polycarbonate piston internals