.223 Rem | 5.56 NATO

Springfield Armory

Springfield Armory ST VICTR 556 Rifle with 14-Inch Barrel, 5.56 NATO, Black B5 Enhanced SOPMOD Stock, and Ambidextrous Safety

Springfield Armory

Springfield Armory SPG HL918556B Hellion 5.56 NATO 18-inch Bullpup Rifle with Adjustable Stock and Flip-Up Sights

Springfield Armory

Springfield Armory HL920556B Hellion 5.56 NATO 20-Inch Bullpup Rifle with Ambidextrous Safety and Flip-Up Sights

Springfield Armory

Springfield Armory HL916556FLC Hellion 5.56 NATO 16-Inch Bullpup Rifle with Adjustable Stock and Ambidextrous Safety

Springfield Armory

Springfield Armory HL916556GLC Hellion 5.56 NATO 16-inch Bullpup Rifle with Adjustable Stock and Ambidextrous Safety

Springfield Armory

Springfield Armory STV916556BLCV2B5 ST VICTR 556 16-inch 5.56 NATO Rifle with B5 Enhanced SOPMOD Stock

ATI

American Tactical Inc Alpha Maxx 5.56 Rifle with 16-Inch Barrel and M-LOK Hand Guard

ATI

American Tactical Inc ATI Milsport 5.56mm Rifle with 60-Round Mag and 13-inch M-LOK Hand Guard

ATI

American Tactical Inc ATI MIL 5.56MM Rifle with 16-Inch M-LOK Handguard and 30-Round Magazine

ATI

American Tactical Inc Alpha Maxx 5.56 NATO Rifle - 16-inch Barrel, Matte Black Finish

ATI

American Tactical Inc ATI Milsport 5.56mm Rifle with Rogers Super Stock and 60-Round Magazine

ATI

American Tactical Inc Milsport 5.56mm Rifle with 60-Round Magazine