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