--- title: "SPRINGFIELD ARMORY Firstline Hellion Bullpup 5.56 NATO 20\" Black Blac" canonical_url: "https://www.kygunco.com/product/springfield-armory-firstline-hellion-bullpup-5.56-nato-20-black-blac" meta: author: KYGUNCO "og:image": "https://cdn.kygunco.com/assets/products/254776/thumbnail.jpg?v=1782307352" "og:image:height": "500" "og:image:width": "500" "og:title": "SPRINGFIELD ARMORY Firstline Hellion Bullpup 5.56 NATO 20\" Black Blac" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Guns](https://www.kygunco.com/category/shooting/guns) / [Rifles](https://www.kygunco.com/category/shooting/guns/rifles) / [Semi-Auto](https://www.kygunco.com/category/shooting/guns/rifles/semi-auto) / SPR-HL920556BCA-FL ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/254776/main.jpg?v=1782307352) For illustration purposes only, this image may not be an exact representation of the product. # SPRINGFIELD ARMORY Firstline Hellion Bullpup 5.56 NATO 20" 10rd California Compliant - Black $1,578.99 ** 5 interest-free payments of **$315.80** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) As low as **$193.45**/month with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Free Shipping Enjoy delivery to the Lower 48 States at no cost. [** Qualified Professionals Only Learn more about KYGUNCO's Qualified Professional program.**](https://www.kygunco.com/page/qualified-professionals) ** Ships To FFL Dealer Handled by our expert shippers in Bardstown, KY. ** Check Local Restrictions Not sure whether this item can be shipped to your area? Enter your ZIP code for a quick check. Item # 254776 Style SPR-HL920556BCA-FL UPC 706397978051 Condition New Manufacturer [Springfield Armory](https://www.kygunco.com/brand/springfield-armory) Model Hellion Bullpup Caliber 5.56 NATO Action Semi-Auto Barrel Length 20 in The California Compliant Hellion™ is a modern 5.56mm bullpup rifle engineered to deliver full-length barrel performance in a compact, compliant platform. Designed with the action positioned behind the trigger, it retains a 20" barrel for enhanced downrange accuracy while maintaining a shorter overall profile. Outfitted with ambidextrous controls, a reversible ejection system, and compliance-focused components, this configuration balances precision, portability, and adaptability. FEATURES - Bullpup configuration with action located behind the trigger for compact handling - 20" barrel delivers strong velocity and improved long-range performance - SA Muzzle Brake reduces recoil and muzzle rise for better control - Strike Industries pistol grip designed for compliant functionality - Ambidextrous safety, charging handle, and controls for user versatility - Reversible case ejection system allows left- or right-shoulder firing - Short-stroke gas piston system with two-position adjustment for reliability - Integrated flip-up front and rear sights for immediate usability - M-Lok® compatible polymer handguard for accessory mounting - Includes Magpul PMAG Gen M3 10-round magazine SPECIFICATIONS - Caliber: 5.56x45mm NATO (.223 Rem) - Barrel Length: 20" - Barrel Material: CMV, Melonite®, 1:7 twist - Overall Length: 31.75" - Weight: 8 lbs 6 oz - Operating System: Short Stroke Gas Piston, 2-Position Adjustable - Bolt Carrier Group: Proprietary, Melonite® - Handguard: Polymer with M-Lok® Slots - Stock: Fixed - Muzzle Device: SA Muzzle Brake - Charging Handle: Ambidextrous, Non-Reciprocating - Safety: Ambidextrous - Grip: Strike Industries - Sights: Integrated Flip-Up Front (Elevation Adjustable), Flip-Up Rear (Windage Adjustable, 5-Position Aperture) - Magazine: (1) 10-Round Magpul PMAG Gen M3 ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Don't Forget Your Ammo ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/springfield-armory-firstline-hellion-bullpup-5.56-nato-20-black-blac#webpage","@type":"WebPage","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"SPRINGFIELD ARMORY Firstline Hellion Bullpup 5.56 NATO 20\" Black 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