The Springfield Armory Hellion 5.56 NATO 20" Low Capacity redefines semi-automatic performance by adapting the battle-proven Croatian VHS-2 military architecture into a premier bullpup design. By positioning the action behind the trigger group, this platform retains a long, velocity-optimizing 20-inch hammer-forged barrel while maintaining an ultra-compact footprint equivalent to traditional short-barreled carbines. The 20-inch variant stands out with a distinctive ribbed forward barrel profile for enhanced cooling, a built-in bayonet lug, and a 4-prong flash hider. Operation is completely ambidextrous, highlighting a non-reciprocating charging handle and a tool-less reversible ejection system for flawless left- or right-shoulder transition. Complete with a 2-position adjustable gas system for suppressed use, an M-LOK polymer handguard, a BCMGUNFIGHTER Mod 3 grip, and a 5-position collapsible stock, this state-compliant rifle ships ready with integrated flip-up sights and a 10-round Magpul PMAG.