Built with a 30mm scope tube in mind, this Leupold Mark 4 AR mounting system (part no. 182860) fixes the ring height, offset, and torque specs that matter for a repeatable zero. Paired with the right AR scope mounts for 30mm optics, the Mark 4 is built for duty, competition, and serious long-range rigs.

Key Specifications

• The ring diameter is 30mm, sized for common tactical and precision optics.
• Ring height measures 1.4 inches, providing the elevated clearance AR platforms typically need.
• The mount weighs 6.05 ounces, keeping added mass low for balance and handling.
• The keeper clamp specifies 65 in-lbs of torque, delivering a repeatable rail interface.
• Ring top screws call for 28 in-lbs of torque, securing the tube without over-stressing fasteners.
• Overall mount length is 5.43 inches, affecting forward optic placement and clearance.
• Usable ring length is 3.46 inches, defining supported scope tube length between the rings.
• Front offset measures 1.75 inches, influencing sightline and scope position on the rail.
• Rear offset measures 0.68 inches, helping establish proper optic centerline placement.
• Ring width measures 1.77 inches, contributing to axial stability of the mounted optic.

Frequently Asked Questions

What torque should the ring screws be set to? 65 in-lbs for the keeper clamp and 28 in-lbs for the ring top screws, giving a repeatable, correctly clamped install.

Why is ring height a factor on AR rifles? Flat-top receivers sit the rail higher than a bolt-action’s bore line, so a 1.4-inch ring height is often needed to clear sights and hold a proper cheek weld.

Buy the Leupold Mark 4 AR 30mm Mount

A one-piece mount removes a variable from a serious build, and this Mark 4 system is machined to give a 30mm optic the height and rigidity an AR platform needs. Order it from our Lubbock, Texas gun shop and it ships fast.