.223 Rem | 5.56 NATO

Heckler & Koch (HK USA)

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

Heckler & Koch (HK USA)

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

Heckler & Koch (HK USA)

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

Heckler & Koch (HK USA)

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

Heckler & Koch (HK USA)

Heckler & Koch MR556 A4 5.56 NATO Rifle with Collapsible Stock

Sig Sauer

Sig Sauer RMCX556N16BLTB MCX 5.56 NATO 16-Inch Barrel Rifle with Black Finish

FN

FN 985212 SCAR 16S NRCH 5.56 NATO Rifle with Folding Stock and Adjustable Sights

FN

FN SCAR 16S NRCH 5.56 NATO Rifle with 16.25-inch Barrel and Folding Stock

FN

FN 985012 SCAR 16S NRCH 5.56 NATO Rifle with 16.25-Inch Barrel and FDE Finish

FN

FN SCAR 16S NRCH 5.56mm NATO Semi-Auto Rifle with 16.25-Inch Barrel in Flat Dark Earth - Part 986012

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