5.56

Trijicon ACOG 4x32mm – Chevron .223 BDC Reticle

Trijicon ACOG BAC USMC RCO 4x32mm – Red Horseshoe Dot .223 BDC Reticle

Surefire 3 Prong Eliminator 5.56 1/2×28 Flash Hider

Rosco Bloodline M4 5.56 NATO Barrel – Multiple Options

Rosco Bloodline 5.56 NATO Mid-Length Barrel – Multiple Options

Geissele URG-I Airborne Charging Handle 5.56 – Black

Geissele Reliability Enhancement Kit

Geissele Reliability Enhanced 5.56 Bolt Carrier Group