RADICAL FIREARMS AR15 PISTOL UPPER MLOK
Radical Firearms AR15 Pistol Upper, .556/223 M4 FCR. This AR15 Pistol upper sports a 7.5 inch threaded M4 barrel with removable muzzle brake. The hand guard is a FCR style 7 inches with ability to accept MLOK. This is a handy little upper to help you build your AR15 pistol. Flat top upper allows you to mount flip up sights or red dot optic.