The new Hellion from Springfield Armory represents a radically unique and innovative approach to firearms design helping to redefine perceptions of semi-automatic 5.56mm performance. Featuring a bullpup configuration where the action is located behind the trigger the Hellion features an overall length of just 28.25-inches while still possessing a 16 barrel. The Hellion sports ambidextrous controls that work in concert with a reversible case ejection system. The result is a 5.56 that combines portability with potent performance. – Caliber: 5.56x45mm NATO (.223 REM) – Color: Black – Barrel: 16 CMV Melonite 1:7 – Front Sight: Integrated Flip-Up Elevation Adjustable – Rear Sight: Integrated Flip-Up w/ 5-Position Aperture Windage Adjustable – Bolt Carrier Group: Proprietary Melonite – Gas System: 2-Position Adjustable Short Stroke Piston – Handguard: Polymer M-Lok – Stock: 5-Position Adjustable w/ Cheek Riser – Muzzle Device: 4-Prong Flash Hider – Charging Handle: Ambidextrous Non-Reciprocating – Safety Switch: Ambidextrous – Grip: BCMGUNFIGHTER Mod 3 – Magazines: (1) 30-Round Magpul PMAG Gen M3 – Weight: 8 lbs – Length: 28.25-29.75