Yankee Hill Machine Rear Flip Sight

Yankee Hill Machine Rear Flip SightSight- Features of this sight include: a rugged but lightweight design with a steel base, a quick release thumb screw, and aluminum stem. Locks in the deployed position with ease and takes up very little space on the upper receiver.Features:1/2 M.O.A. and comes with a standard rear peep apertureMounts to any picatinny railDesigned to co-witness with the standard M16-M4 front sight