30mm Extended Offset One Piece Scope Dovetail Mount Ring fit 3/8 Inch 11mm Rail Heavy Duty Mount Ring

FITS 1-INCH & 30MM SCOPES: This dual ring mount system fits pistol and rifle scopes with 30mm diameter tubes but includes ring spacer to securely handle 1-inch scopes as well; the cantilever design allows scopes to be placed up to 2.8 inches forward for better eye relief and a fuller field of view
HIGHLY ADJUSTABLE: This rifle scope mount's rings can also be adjusted forward or backward to any of length from 5 inch to 6.75-inch increments to fit all rifle scopes for added flexibility for scope placement and optimum eye relief.
DESIGN: One piece design, hold your optics steady against of violent recoil, minimal to prevent uneven pressure losing zero.
ROCK-SOLID BUILD: aircraft-grade 6061-T6 aluminum, strong and lightweight 11 ounces; See thru rings ensure that the shooter can use NEITHER sighting system effectively.
QUICK DETACH MOUNT: allows you to switch scopes quickly and minimal loss of zero.