Springfield Armory Hellion 5.56 16in OD Green Bullpup

The Springfield Armory Hellion is a compact bullpup semi-automatic rifle designed to deliver full-length barrel ballistics in a shorter overall package. It is constructed with a polymer chassis in olive drab green and features ambidextrous controls and a reversible ejection system for flexible handling. The Hellion's short-stroke piston gas system and integrated flip-up sights make it well suited to range use, training, and situations where maneuverability matters.

Key Specifications

• The rifle is chambered in 5.56x45mm NATO (.223 Rem).
• The barrel measures 16 inches and is finished with a Melonite treatment.
• The gas system is a 2-position adjustable short-stroke piston.
• The rifling twist rate is 1:7.
• The overall length is 28.25" - 29.75".
• The unloaded weight is approximately 8 lbs.
• Sights are integrated flip-up front and rear, with the rear offering a 5-position aperture and windage adjustment.
• The stock is a 5-position adjustable design with a cheek riser.
• The bolt carrier group is a proprietary Melonite-treated BCG.
• The muzzle is fitted with a 4-prong flash hider.

The Hellion pairs compact dimensions with familiar AR-pattern ergonomics, giving shooters a short, capable platform that still delivers 16-inch barrel performance. Its ambidextrous controls, adjustable stock, and rugged polymer chassis make it a practical choice for shooters who prioritize maneuverability without sacrificing functionality.