UPC 706397956776 ID 4026322 └ Category Rifles > Semi-Automatic Manufacturer Springfield Model Hellion Caliber 5.56 NATO Color Black Capacity 30 Round Barrel Length 16" Sights Flip Up Hand Right Threaded Barrels Yes Adjustable Stock Yes AR Style No Muzzle Device Flash Hider Stock Type Synthetic Mechanical System Piston ————————————————— Description Springfield Armory's Hellion answers the call for superior ballistic performance in a short, adaptable platform. 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. To ensure the maximum in flexibility and performance, the Hellion bullpup features a two-position adjustable gas block with S suppressed and N normal modes. It sports ambidextrous controls that work in concert with a reversible case ejection system, allowing it to be easily fired from either shoulder. Integrated into the Picatinny top rail of the Hellion is a set of sturdy and capable flip-up iron sights. These spring-loaded sights quickly pop into position, locking solidly until released. It accepts standard AR-15 pattern grips like the included Bravo Company USA BCMGUNFIGHTER Mod 3. The polymer handguard features nine M-Lok slots for mounting accessories, three each at the 3, 6 and 9 o'clock positions. The Springfield Armory Hellion bullpup ensures maximum adaptability to a wide range of shooters through its spring-loaded, five-position adjustable buttstock.