.223 Rem | 5.56 NATO

Aero Precision

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

Seekins Precision

Seekins Precision 0011300097-F Black DMR Rifle in .223 Wylde with 18-Inch Stainless Steel Barrel

Keltec

Kel-Tec RDBBLK RDB 5.56x45mm NATO 20+1 17.30" Black Receiver Fixed Bullpup Black Stock Black Polymer Grip

Keltec

Kel-Tec RDB20BLK 5.56x45mm NATO Semi-Auto Rifle with 20.5" Barrel and Ambidextrous Features

Daniel Defense

Daniel Defense DDM4 V7 SLW 5.56 NATO Rifle with 14.5-Inch Threaded Barrel and 6-Position Stock

Daniel Defense

Daniel Defense DDM4 V7 SLW 5.56 NATO Rifle with 14.5-Inch Barrel and SoftTouch Stock

LWRC

LWRCI ICDIR5ODG16ML 5.56 NATO AR-15 Rifle with 16.1-Inch Threaded Barrel and M-LOK Handguard

Bushmaster

Bushmaster QRC II 5.56x45mm NATO Carbine with 16-inch Barrel, Collapsible Stock, and Optic Ready - Model 0010017BLK

Bushmaster

Bushmaster QRC II Pro 5.56x45mm NATO Rifle with 16-Inch Threaded Barrel and B5 Bravo Stock

Bushmaster

Bushmaster QRC II Pro 5.56 NATO Rifle with 16-inch Threaded Barrel, Black Finish - Part Number 1010018BLK

Wilson Combat

Wilson Combat TRPC556BL Protector Carbine 5.56x45mm NATO with 16.25-Inch Barrel and Black Armor-Tuff Finish

Sig Sauer

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