16.5in Chrome Lined Cold Hammer Forged Barrel; 1:7 inch Twist; Folding Front Tritium with Rear Sights; Reinforced Polymer Bullpup Stock Configuration; Unparalleled dexterity without the loss of bullet velocity; Can also be changed out with a separate purchase of conversion kits to shoot 9mm and .300 Blackout; Perfect for anyone looking to have an accurate, modular, reliable, and agile rifle system all on one platform