RPM Precision 30mm Medium Scope Rings with Co-Linear Bubble Level

The RPM Precision 30mm Medium Scope Rings with Co-Linear Bubble Level (RPM part no. CLR-30100) mount a 30mm scope while building an anti-cant bubble level right into the ring set. The level sits where the shooter’s non-dominant eye can catch it from the shooting position, giving a fast cant check without adding a separate accessory to the rifle. Made in the USA from 6061-T6 aluminum with a 303 stainless steel cross bolt, these medium-height rings are built to hold zero under recoil while eliminating the guesswork of aligning a separate bubble level during mounting.

Key Specifications

• Fits 30mm scope tubes in a medium (1.00-inch) ring height.
• Built-in co-linear bubble level, visible from the shooting position with the non-dominant eye.
• Ring body and cap machined from 6061-T6 aluminum for a strong, lightweight mount.
• Uses a 303 stainless steel cross bolt (1/2-inch) for a secure clamp on the rail.
• Features an alignment lug to keep the cap and base aligned during cap screw installation.
• Recommended torque values of 18 in/lbs on the cap screws and 45 in/lbs on the cross bolt for proper installation.
• Weighs approximately 4.4 ounces for the medium-height set.
• Proudly made in the USA.

Frequently Asked Questions

What does the co-linear bubble level do? It’s built into the ring set and sits where the shooter’s non-dominant eye can check for cant from the normal shooting position, without a separate add-on level.

What scope tube size do these rings fit? 30mm, in a medium 1.00-inch ring height.

What torque should be used when installing these rings? RPM recommends 18 in/lbs on the cap screws and 45 in/lbs on the cross bolt.

Buy the RPM Precision 30mm Medium Scope Rings with Co-Linear Bubble Level

Mount your scope and check your cant in one step. Order these RPM Precision rings from our scope rings lineup, ships fast from our Lubbock, Texas gun shop.