EST SKS, Mosin-Nagant, Other Receiver Mount with Weaver Rail. A solid one-piece mount milled from high grade aluminum is the lowest mounting solution for SKS, Mosin-Nagant, Mauser and other rifles available and is made by Russian gunsmiths from the Tula weapons factory. The distance from the bottom of the Weaver rail to the centerline of the side rail is 34 mm only. The screw clamp fixes the mount on your rifle firmly and doesn't require stock cutting. The mount works ideally with Curved, Narrow and Thick side rails, doesn't work with Molot or Double side rails. A centered mount at an excellent price. The mount will hold zero upon being reinstalled.