.223 Rem | 5.56 NATO

Springfield Armory

Springfield Armory STV914556BV2B5 ST VICTR 5.56 NATO AR-15 Rifle with 14-Inch Barrel and B5 Enhanced SOPMOD Stock

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