Springfield Hellion, Semi-automatic Rifle, Bullpup, 223 Remington/556NATO, 20" Hammer Forged Barrel with Bayonet Lug, 1:7 Twist, Springfield Armory Muzzle Brake, Matte Finish, Black, Strike Industries Simple Featureless Grip, Fixed Stock, Front/Rear Flip Sights, 2-Position Short Stroke Gas Piston, Ambidextrous Safety, Ambidextrous Charging Handle, MLOK Handguard Reversible Ejection System, 10 Rounds, 1 Gen3 Magpul PMAG, California Compliant HL920556BCA • Action: Semi-Automatic • Capacity: 10+1 • Finish: Black • Sights: Low Profile Flip-Up Dual Aperture Rear • Barrel length: 20 CMV Melonite • Overall length: 31.75 • 1:7 RH Twist/Bullpup Design SA Muzzle Brake Ambi, NR Charging Handle • Action: Semi-Auto • Capacity: 10 + 1 • Finish: Black Anodized • Sights: Low Profile Flip-Up Front/Rear • Barrel length: 20" • Overall length: 31.75" • 15in Free-Float MLOK Rail/ Ambi Bolt Release