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The STD mounting system from Leupold is a simple, yet secure mounting solution for attaching a riflescope to the receiver of your favorite firearm. STD rings and bases are extremely dependable, and they can be combined in a variety of configurations to suit your shooting needs.
STD 30mm Extension Mounting Rings are made of CNC machined steel with two Torx head cap screws. They're designed to provide a 5/8" extension that allows you to shorten or lengthen your ring spacing for a perfect fit atop your favorite firearm. The front ring has a machined dovetail that fits directly into the corresponding opening of a STD rail, while the rear ring is machined to lock in securely to the STD rail's windage screws. This system is easy to install, and provides a repeatable mounting solution that can be adapted to nearly any firearm.
These mounting rings place the scope's centerline 0.77" over the mounting base.
0.77" Mounting Height
Machined steel construction
Designed for riflescopes with a 30mm main tube
Compatible with STD 1-piece and STD 2-piece bases
Two Torx head cap screws ensure a secure grip on your scope
Provide a 5/8" extension for shortening or lenghtening your ring spacing