Specifications: Weight: 6.2 Lbs. / 2.8 Kg Caliber: 0.68 Barrel: Rifled/Indexed for Mag Length: 31 Inches / 78 cm Height: 12 Inches / 30 cm Action: Semi - Auto Power: HPA/C02 Stock: 13 Cu. In. / 3000 PSI Tank/Stock Rails: MIL-STD 1913 Picatinny Rail Platform Upper: Machined Upper Lower: Lightweight Polymer Lower On/Off Valve: Functional Charging Handle Operating Tempurature: 0° to 130° F FEATURES Projectile deployment has a variable kinetic impact of 12-28 joules, with an extended range and precision accuracy. The VKS can utilize two types of air sources, extending the officer's time in the field and increasing functionality. Option 1 is the HPA buttstock, containing a 13 cu. in. tank. Option 2 is a remote air line that connects to an additional, larger tank.