Realistic, quality design with metal housing and rifled 177 barrel for accuracy. Up to 600 FPS velocity. The Sig MPX semi automatic air rifle runs from 88 gram CO2 held within the stock and features a 30 round magazine. Supplied with adjustable front and rear sights fitted to the integral Weaver rail. Red dot sights can be purchased as an extra to fit the rail. The accessory rails will accept a laser or torch with Weaver mounts.