.223 Rem | 5.56 NATO

Heckler and Koch (HK USA)

Heckler & Koch MR556 A4 5.56 NATO Rifle with Gray Cerakote Finish

Heckler and Koch (HK USA)

Heckler & Koch MR556 A4 5.56 NATO Rifle with Collapsible Stock 81001033

Heckler and Koch (HK USA)

Heckler and Koch MR556 A4 5.56 NATO Rifle with Collapsible Stock and Gray Cerakote Finish

Heckler and Koch (HK USA)

Heckler & Koch MR556 A4 5.56 NATO Rifle with Collapsible Stock 81000827

Heckler and Koch (HK USA)

Heckler & Koch MR556 A4 5.56 NATO Rifle with Collapsible Stock

Daniel Defense

Daniel Defense DDM4 V7 Pro 5.56 NATO Rifle with 18-Inch Barrel, FDE Stock & Geissele Trigger

Sig Sauer

Sig Sauer MCX Spear LT 5.56 NATO Rifle with Folding Brace and 11.5-inch Barrel - Part Number PMCX556N11BIR10

Sig Sauer

Sig Sauer RMCX556N16BIR MCX Spear LT 5.56 NATO Rifle with 16-Inch Barrel and Folding Stock

Daniel Defense

Daniel Defense DDM4 V7 Pro 5.56 NATO Rifle with 18-inch Barrel and Geissele Trigger

Sig Sauer

Sig Sauer MCX Spear LT 5.56 NATO Rifle with Folding Brace and 30-Round Capacity - Model PMCX556N11BIR

Q

Q LLC Mini Fix 5.56 NATO 16-inch Tapered Barrel Rifle with Folding Stock and Cherry Bomb Muzzle Brake

Daniel Defense

Daniel Defense DDF 02-191-16291-047 DD4 R3 SPR3 5.56 NATO Rifle with 18-Inch Barrel and Magpul PRS Lite Stock