Springfield Armory Hellion 5.56 NATO Bullpup, 16" CMV CHF Melonite Barrel, Short-Stroke Piston, Ambidextrous Controls, Black
The Springfield Armory Hellion is a modern 5.56mm NATO bullpup built in Croatia and configured with fully ambidextrous controls, tool-less reversible ejection, and a two-position gas regulator. This example features a 16" cold hammer-forged, Melonite-treated CMV barrel, integrated flip-up sights, and a full-length numbered Picatinny top rail. It is in excellent overall condition with a clean, mirror-bright bore, and includes one 30-round PMAG and the original soft case.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in great shape. Minor, superficial scratches and blemishes are present on exterior surfaces.
What’s Included
- Original soft rifle case with exterior pouches
- One 30-round Magpul PMAG polymer magazine with window
The Hellion uses a semi-automatic, short-stroke gas piston system with a rotating bolt. A two-position gas regulator labeled Normal/Suppressed allows user tuning, and ejection is reversible to the left or right without tools.
The 16" barrel is CMV steel, cold hammer-forged, and Melonite-treated, with a 1:7 twist and a threaded muzzle. Chambering is 5.56mm NATO.
Controls are fully ambidextrous, including the safety, magazine release, and the non-reciprocating charging handle. The stock offers five positions of adjustment and an adjustable cheek riser. The receiver is polymer with a black finish.
A full-length numbered Picatinny top rail spans the action and integrates flip-up iron sights: an elevation-adjustable front and a 5-aperture, windage-adjustable rear. The polymer handguard incorporates M-LOK slots for accessory attachment.
The rifle accepts STANAG/AR-pattern magazines and has a 30+1 capacity. Country of origin is Croatia, and the manufacturer part number is HL916556B.