Ruger

Ruger M77 Long Action Picatinny Rail (MUST DRILL & TAP RECEIVER) 20 MOA

Ruger M77 Long Action Picatinny Rail (MUST DRILL & TAP RECEIVER) 20 MOA

$39.99
  • SKU: 46122
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Description

Ruger M77 Long Action Picatinny Rail (MUST DRILL & TAP) - 20 MOA

This is a custom solution for Newer Model Ruger M77 Long Action owners who need a true Picatinny mounting platform. Because the factory Ruger M77 utilizes proprietary integral scope bases, mounting a standard Picatinny rail requires modification. This rail is designed to be permanently mounted to the receiver via drilling and tapping.

With 20 MOA built-in elevation, this is the ideal upgrade for gunsmiths custom-building a long-range rifle on a modern M77 Long Action who want to convert to a universal 1913 Picatinny standard.

CRITICAL FITMENT GUIDE

Identify Your Receiver Profile Before Buying

✅ FITS:

  • Ruger M77 Long Action (Flat Top Receiver)
  • Ruger Hawkeye Long Action (Not factory drilled & tapped)

❌ DOES NOT FIT:

  • Older Ruger M77 "Rounded" Receivers (Tang Safety)
  • Factory Drilled & Tapped Hawkeyes, including:
    • Ruger Hawkeye Hunter
    • Ruger Hawkeye Long Range Hunter
    • Ruger Hawkeye Long Range Target

You can find the older Model Ruger M77 Rails HERE

GUNSMITHING REQUIRED: This rail does not clamp onto the integral bases. You must drill and tap the receiver (8-40 threads) to install this mount.

Why Choose This Rail?

  • 20 MOA Elevation: Features a built-in 20 Minute of Angle downward cant, maximizing your scope's internal elevation adjustment for long-range shooting.
  • Universal Compatibility: Converts the proprietary Ruger mounting system into a universal Picatinny rail, allowing you to use any Weaver or Picatinny style rings.
  • Machined from 6061 T6 Aluminum: Lightweight and durable, machined from domestic extruded aluminum.
  • Made in the USA: Proudly manufactured in our Quakertown, PA facility.

Specifications

Rail Type: One Piece Picatinny
Machined from: Domestic 6061 T6 Extruded Aluminum
Finish: Matte Black Anodize
MOA: 20
Center Spread: 4.215"
Overall Length: 6.670"
Mounting Hardware: 8-40 Hex Head Screws and Wrench Included
Receiver Prep: Requires Drilling & Tapping (8-40)
Receiver Fit: Newer "Flat Top" M77 Only (Long Action)

M77 Drill & Tap Rail FAQ

Will this fit my older "Tang Safety" M77?

No. The older M77 rifles typically have a rounded receiver top. The radius of this mount is designed for the newer "Flat Top" style receivers found on Mk II and Hawkeye models. It will not seat correctly on the older round actions.

What zero distance do you recommend for 20 MOA?

When using a 20 MOA mount, we typically recommend a 200-yard zero to ensure you do not bottom out your scope's elevation adjustment at closer ranges, depending on your caliber and scope specifications.

Warning: This product may be alloyed with trace amounts of lead and other elements which are known to the State of California to cause reproductive harm and cancer. To prevent exposure, do not alter the product by welding, grinding, etc. For more information, go to www.P65Warnings.ca.gov.

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