Springfield, Hellion, Semi-automatic Rifle, Bullpup, 223 Remington/556NATO, 16" Hammer Forged Barrel, 1:7 Twist, 4 Prong Flash Hider, Matte Finish, Black, BCM MOD 3 Grip, 5-Position Adjustable Stock with Cheek Riser, Front/Rear Flip Sights, 2-Position Short Stroke Gas Piston, Ambidextrous Safety, Ambidextrous Charging Handle, MLOK Handguard Reversible Ejection System, 30 Rounds, 1 Gen3 Magpul PMAG