The Konus Quick Ring is perhaps the most versatile ring mount available today. The dual design allows for a snug fit on both, a 30mm riflescope as well as a 1 inch scope. The quick release locking lever allows you to remove and replace the scope & rings with no loss of zero. The dual mount will securely fit a Weaver or Picatinny base with integral recoil stops to prevent movement. The medium ring will accommodate riflescopes up to 44mm.