LEUPOLD Ruger M77 34mm High Matte Black Ringmount (120151)

Product Info for Leupold RM 34mm Scope Ring 120151

Mounting a scope should be the last thing you worry about in the field. Leupold ringmounts give you a foundation that's solid enough to disappear from your mind entirely. They're built to the same standard as the optics they hold, which is exactly what you want from a mount.

The rings are machined from solid steel stock, not cast. That process produces tighter tolerances and better structural integrity than cast alternatives. Leupold machines this product in-house, which means quality control is consistent from one set to the next. The matte black finish reduces glare and withstands field conditions without chipping or flaking.

These are extension ringmounts, which give them a practical advantage on rifles with long actions. Standard ring spacing on most bases runs about four inches. On a long-action rifle, that spacing may not work with your scope's tube layout. The extension design gives you five-eighths of an inch of adjustability, so you can shorten or lengthen spacing to get the rings positioned correctly over the scope's adjustment turrets and off the objective bell.

This specific set is designed for the Ruger M77 receiver and fits 34mm main tube riflescopes. The high mounting height gives clearance for larger objective lenses without the scope sitting cockeyed on the rifle. No tap required for installation. These mount directly to the M77 receiver without drilling or modifications.

Every Leupold ringmount carries their Full Lifetime Guarantee. 
Gritr Outdoors is an authorized Leupold dealer.

Features

• Machined steel construction from solid stock
• 34mm main tube diameter
• High mounting height for large objective lens clearance
• Extension design with 5/8-inch of ring spacing adjustment
• Fits Ruger M77 receiver directly, no tap required
• Matte black finish
• Covered by Leupold Full Lifetime Guarantee
• Sold as a pair

Frequently Asked Questions

What makes extension ringmounts different from standard rings?

Standard rings mount at a fixed spacing determined by your base. Extension ringmounts allow you to shift that spacing by up to five-eighths of an inch in either direction. That adjustment is useful on long-action rifles where standard four-inch spacing puts a ring over the turrets or too close to the objective bell.

Will these fit any Ruger M77, or only specific variants? 

These rings are designed for the Ruger M77 receiver platform. Most M77 variants share the same integral base system, but confirm your specific model before ordering. If you're running an M77 Mark II or Hawkeye, check Leupold's compatibility guide to verify fitment.

Do I need to tap the receiver for installation? 

No. These are designed as a no-tap mounting solution for the Ruger M77. They attach directly to the receiver's integral bases without any drilling or threading required.

Why choose machined steel rings over aluminum? 

Aluminum rings are lighter, but steel offers more rigidity and resistance to deformation under recoil. On hard-kicking rifles or any application where absolute repeatability matters, machined steel rings hold their position more consistently over time. Leupold's machining process also produces tighter tolerances than cast steel alternatives, which means better alignment out of the box.