Semi-auto, gas operated. Distinctive & durable gunmetal gray Perma-Cote UT (Ultra Tough) surface finish is applied to every external surface including the barrel, receiver, buttstock & forearm. Stock & forearm are then given a Dura-Touch Armor Coating for improved grip in all weather conditions. Active Valve System reduces recoil and cycles fast for follow-up shot speed. Three Invector-Plus choke tubes. Wt.: 7 lbs. Includes: 2 LOP stock spacers, drop & cast adjustment spacers & sling swivel studs