This great little short barrel piston AR15 has a 10.25″ Colt Defense MK18 barrel with a PWS flash hider. The barrel is wrapped up in an ARMS SIR system rail cluster. It has an ARMS rear sight and a Yankee Hill flip up front sight. It has a Magpul pistol grip and foregrip and a VLTOR IMod clubfoot stock. On top is an Aimpoint M2 sight secured with an ARMS M68 mount. Consider this one mission ready.