.223 Rem | 5.56 NATO

Battle Arms Development

Battle Arms Development OIP003 Gen3 .223 Rem/5.56 NATO Rifle with 16-Inch Barrel

Heckler & Koch (HK USA)

HK MR556 A4 Semi-Auto Rifle with 11-Inch Barrel in Patriot Brown and Black Synthetic Finish

Heckler & Koch (HK USA)

HK 81001202 MR556 A4 5.56x45mm Rifle with 11-Inch Threaded Barrel and M-LOK Handguard

Heckler & Koch (HK USA)

HK MR556 A4 Semi-Auto Rifle with 16.5-inch Threaded Barrel and Ambidextrous Features

Heckler & Koch (HK USA)

HK MR556 A4 Semi-Auto Rifle with 16.5-inch Threaded Barrel, 5.56x45mm, Patriot Brown Picatinny Rail, M-LOK Handguard, and Ambidextrous Safety

Daniel Defense

Daniel Defense MK12 SPR Rifle with 18-Inch Barrel in 5.56 NATO – Black Hardcoat Anodized Finish

Daniel Defense

Daniel Defense DDM4 M4A1 CA Compliant 5.56x45mm NATO Rifle with 14.5-Inch Barrel and SoftTouch Stock

Heckler & Koch (HK USA)

HK MR556 A4 Semi-Auto Rifle with 16.5-inch Threaded Barrel, Black M-LOK Handguard, and Ambidextrous Safety

Heckler & Koch (HK USA)

HK MR556 A4 Semi-Auto Rifle with 16.5-inch Threaded Barrel in Black, Part Number 81000828

Daniel Defense

Daniel Defense DDM4 MK12 5.56 NATO Stainless Steel Rifle with 10-Round Fixed Magazine

Daniel Defense

Daniel Defense DDM4 V7 Pro Series Rifle in 5.56 NATO with Collapsible Stock and Cerakote Finish

Daniel Defense

Daniel Defense DDM4A1 5.56 MILSPEC+ 14.5-Inch California Compliant Rifle