The Hatfield SAS USA20W is a semiautomatic shotgun featuring a turkish walnut buttstock and forend with deluxe checkering and a recoil absorbing 0.5 ventilated rubber recoil pad. The SAS operating system is a unique blend of gas and inertia where a gas piston moves only one inch to kick the bolt rearward and start the bolts inertia travel through the operating cycle fewer moving parts provides higher dependability. The SAS gasinertia system operates dependably with most commercially available 2.75" and 3" shells. The gasinertia action is housed inside a receiver machined from 7075 aluminum finished in a high gloss black anodizing. The SAS 28" barrel is chambered for both 2.75" and 3" shells and features a full length ventilated rib and screwin chokes three chokes full modified and improved cyclinder are included. Magazine capacity is 41 rounds but with a magazine plug included to limit the capacity to 21 rounds. Total weight is approximately 7 lbs." UPC 851799004836 Barrel Length 28" BARREL Capacity 4 ROUNDS Finish BROWN Gauge 20 GA Weight 7 LBS. includes 3 screw in chokes & wrench