Genuine Colt M4/A4 Detachable Carry Handle is the same component used on military issued carbines and rifles. Mil-Spec rear sight features elevation adjustment up to 600 meters (marked 6/3). Standard A2 style adjustments allow for easy windage and elevation changes. Rear peep features the standard military two apertures, one small and one large. Carry handle easily attaches to Picatinny upper receivers via two, easy to grasp thumb nuts. Forged aluminum body, and steel hardware ensure that this sight system will hold up. Aluminum is hard coat anodized and steel components are parkerized. Carry handle features the traditional carry handle mount, so that that optics can be mounted to the top as on a standard A2 carry handle.