Springfield Hellion Bullpup 5.56 NATO 16″ ODG

Description

The Springfield Hellion Bullpup 5.56 NATO 16” ODG is a compact, full-length-barrel rifle that brings the action behind the trigger for a shorter overall package without sacrificing velocity or accuracy. Chambered in 5.56x45mm NATO, this bullpup delivers a 16-inch barrel in a 28.25-inch overall length, making it one of the most maneuverable semi-auto rifles on the market for competition shooters who need to transition between tight positions and long-range stages.

Manufacturer	Springfield Armory
Model	Hellion
Material	Polymer receiver with steel barrel and bolt carrier group
Compatibility	Accepts standard AR-15 magazines (STANAG pattern)
Finish	Olive Drab Green (ODG) polymer
Weight	7.9 lbs (unloaded, per manufacturer specs)
Condition	New

Key Features

• Bullpup Layout — Why it matters: You get a full 16-inch barrel in a package shorter than most SBRs, keeping your muzzle velocity and accuracy while reducing overall length for stage transitions.
• Ambidextrous Controls — Why it matters: The Hellion ships with a reversible ejection port and a left-side charging handle, so left-handed shooters don’t eat brass and right-handed shooters get a natural grip.
• Two-Position Adjustable Short-Stroke Piston Gas System — Why it matters: You can dial between suppressed and unsuppressed settings, keeping the action clean and reducing fouling during long match days.
• Integrated Flip-Up Iron Sights — Why it matters: No need to buy backup sights out of the box—these are zeroed at the factory and fold flat when not in use, saving rail space for optics.
• Full-Length Picatinny Top Rail — Why it matters: Mount any LPVO, red dot, or magnifier combo directly without adapters, keeping your optic over the bore axis for intuitive holds.

Who It’s For

This rifle is for the competitive shooter who wants a short, fast-handling platform that still reaches out to 600 yards with match ammo. It’s also ideal for three-gun shooters who need to transition between rifle, pistol, and shotgun stages without a heavy, long-barreled rifle slowing them down. If you’re a precision enthusiast who appreciates the data behind a 1:7 twist barrel stabilizing 77-grain OTM rounds, the Hellion’s 16-inch barrel delivers consistent sub-MOA performance with quality ammunition.

Pros & Cons

• Pro: Compact overall length (28.25 inches) with a full 16-inch barrel—no NFA stamp needed.
• Pro: Ambidextrous ejection and charging make it shootable for any handedness.
• Pro: Short-stroke piston system runs cleaner than DI, reducing maintenance between matches.
• Con: The trigger pull is heavier than most AR-15 drop-in triggers (per manufacturer specs, it’s around 7.5 lbs), which can affect precision in slow-fire stages—consider aftermarket trigger work if you’re chasing splits.

Comparison

Feature	Springfield Hellion	Geissele Super Duty 16″	Zev Technologies OZ9C
Action	Bullpup, short-stroke piston	Direct impingement (DI)	Striker-fired (pistol)
Barrel Length	16″	16″	4.5″ (pistol)
Overall Length	28.25″	33.5″	7.5″
Weight (unloaded)	7.9 lbs	7.3 lbs	1.8 lbs
MSRP	$1,842.54	$1,999	$1,799

The Hellion is the only bullpup here, offering a shorter overall length than the Geissele Super Duty while maintaining the same barrel length. The Zev OZ9C is a pistol, not a direct competitor, but it’s included to show the price range for a premium firearm at a similar cost.

FAQ

Does the Springfield Hellion accept standard AR-15 magazines?

Yes, it uses STANAG-pattern AR-15 magazines, including Magpul PMAGs, Lancer L5s, and factory 30-rounders. No proprietary mags needed.

Is the Hellion accurate enough for competition shooting?

Per independent testing, with 77-grain OTM match ammo, the Hellion consistently produces 1.5 MOA groups at 100 yards. The 1:7 twist barrel stabilizes heavier bullets well for long-range stages.

Can the ejection be reversed for left-handed shooters?

Yes, the Hellion features a reversible ejection port and includes a left-side charging handle. The process takes about 10 minutes with basic tools.

What’s the barrel twist rate?

The barrel has a 1:7 twist rate, optimized for 55-77 grain 5.56 NATO ammunition.

Call to Action

Ready to run a compact bullpup that keeps your barrel length and accuracy? Shop Semi Auto Rifles and grab the Springfield Hellion Bullpup 5.56 NATO 16” ODG today. Browse more Springfield Armory rifles or check our bullpup rifle collection for alternatives.

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Last updated: April 2026