Shadow Systems E526 Features The Shadow Systems E526 is built on a semi-auto action chambered in 5.56 x 45mm giving it the reliability and ammunition commonality that AR platform shooters already know. Its 11.5 inch spiral fluted barrel cuts weight up front for faster handling while the fluting helps dissipate heat during sustained strings of fire. A 1 in 7 inch twist rate stabilizes a wide range of 5.56 bullet weights keeping the rifle versatile across different loads. The threaded 1/2x28 muzzle accepts a suppressor or muzzle device letting shooters tailor the rifle s sound signature and recoil control to their setup. The proprietary collapsible folding stock furniture system lets the E526 fold down for compact storage or transport while still extending to a full length of pull when shouldered. A 60 to 90 degree thumb safety gives a fast positive on-off indication under stress while the Black Nitride applied finish protects the metal surfaces from corrosion and wear. The rifle ships with two 30 round magazines and an SS rifle bag giving shooters everything needed to get the E526 into service immediately. At 5.4 pounds this short barrel rifle is a maneuverable field-ready package for sale at GrabAGun. Shadow Systems E526 Specifications Manufacturer: Shadow Systems Model: E526 Series: E526 Series Type: NFA - Short Barrel Rifle Action: Semi-Auto Caliber: 5.56 x 45mm Barrel Length: 11.5 Barrel Description: Spiral Fluted Twist Rate: 1 in 7 Capacity: 30+1 Magazines Included: 2 Magazine Description: 30-Round Sights: No Sights Thread Pattern: 1/2x28 Stock: Proprietary Furniture System Collapsible / Folding Finish: Black Nitride Applied Finish Safety: 60-90 Degree Thumb Safety Weight: 5.4 lbs Case: SS Rifle Bag Available At: GrabAGun