.223 Rem | 5.56 NATO

Sig Sauer

Sig Sauer RM40016BTRDV2CA M400 5.56 NATO Rifle with 16-inch Threaded Barrel and Magpul MOE Stock

Sig Sauer

Sig Sauer M400 SDI 5.56 NATO Semi-Auto Rifle with 16-Inch Threaded Barrel and Magpul SL Stock

Sig Sauer

Sig Sauer M400 SDI 5.56 NATO Rifle with 16-inch Threaded Barrel and Magpul SL Stock

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

Sig Sauer

Sig Sauer M400 V2 5.56 NATO Semi-Auto Rifle with 16-Inch Threaded Barrel and Magpul SL-K Stock

Sig Sauer

Sig Sauer M400 V2 5.56 NATO Semi-Auto Rifle with 16-Inch Barrel and Magpul SL-K Stock

Sig Sauer

Sig Sauer M400 5.56 NATO Semi-Auto Rifle with 16-Inch Stainless Steel Barrel and Magpul SL-K Stock

Sig Sauer

Sig Sauer RM40016BTRDV2COIL M400 Semi-Auto Rifle with 16-Inch Barrel and Magpul SL-K Stock

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