.223 Rem | 5.56 NATO

Sig Sauer

Sig Sauer M400 TRDV2 5.56 NATO Semi-Auto Rifle with 11.5-Inch Barrel, Black Finish, and Optic-Ready Design

Smith & Wesson

Smith & Wesson M&P15 Sport III 13952 5.56 NATO Rifle with 16-Inch Threaded Barrel and M-LOK Black Finish

Smith & Wesson

Smith & Wesson M&P15 Sport III 13953 5.56 NATO Rifle with 16-Inch Heavy Barrel and Black Aluminum Receiver

Springfield Armory

Springfield Armory HL916556Y Hellion 5.56 NATO 16-inch Bullpup Rifle in Gray

Springfield Armory

Springfield Armory HL916556YLC Hellion 5.56 NATO 16-Inch Bullpup Rifle in Gray

Springfield Armory

Springfield Armory Hellion SPG HL916556F 5.56mm NATO Bullpup Rifle with 16-Inch Barrel in Flat Dark Earth

Springfield Armory

Springfield Armory HL916556G Hellion 5.56mm Bullpup Rifle with 16-Inch Barrel and Ambidextrous Features

Aero Precision

Aero Precision M4E1 Pro Rifle 5.56 NATO with 16-Inch Barrel in OD Green - Part APCR640450

Aero Precision

Aero Precision M4E1 Pro Rifle 5.56 NATO with 16-Inch Barrel - Kodiak Brown Anodized Aluminum Receiver

Springfield Armory

Springfield Armory ST VICTR 556 16-inch Rifle with 30+1 Capacity and B5 Enhanced SOPMOD Stock

Sig Sauer

Sig Sauer RM40016BROSER5X210 M400 5.56 NATO Rifle with 16-Inch Threaded Barrel and Magpul SL Stock

Springfield Armory

Springfield Armory STV916556CBV2B5 ST Victor 5.56 NATO Rifle with 16-inch Barrel, Ambidextrous Safety and B5 SOPMOD Stock