The Burris AR-P.E.P.R. Quick Detachable Mount is perfect for mounting your scope forward on your AR-style rifle. The Proper Eye Position Ready (P.E.P.R.) Mount provides 2" of forward scope positioning room which will allow you to obtain proper eye relief and maintain a proper shooting position. Choose between the permanent attachment style or the quick detach option which allows you to quickly remove and replace your optic. Includes both smooth and picatinny ring tops.