.223 Rem | 5.56 NATO

Aero Precision

Aero Precision M4E1 Pro Rifle 5.56 NATO with 16-inch Barrel - Black Anodized Aluminum Receiver

Springfield Armory

Springfield Armory SAINT Edge 5.56x45mm NATO AR-15 Rifle with 16-Inch Black Melonite Barrel and Adjustable Bravo Stock

FN

FN 36-100740 FN15 Guardian 5.56 NATO Rifle with 16-Inch Barrel and Collapsible Stock

Armalite

ArmaLite M153GN13CO M-15 Competition AR-15 Rifle in 223 Wylde with 16-Inch Barrel and Adjustable Stock

Armalite

ArmaLite M15TAC14 M-15 Tactical 5.56x45mm NATO Rifle with 14.5-inch Barrel and Magpul Collapsible Stock

Armalite

ArmaLite M15LTC16CO M-15 Light Tactical Carbine 5.56mm with 16-Inch Barrel and Magpul Collapsible Stock

Smith & Wesson LE

Smith & Wesson LE M&P15 .223 Rem/5.56 NATO Rifle with Carry Handle, 16-Inch Barrel, 30+1 Capacity

Smith & Wesson LE

Smith & Wesson LE M&P15TS 5.56 NATO Carbine with 16-inch Barrel and Magpul MOE Stock

Sig Sauer

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

Springfield Armory

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

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