How to Mount a Scope | Palmetto State Armory

Published on August 13, 2024
Duration: 7:16

This guide from Palmetto State Armory demonstrates the proper procedure for mounting a scope onto an AR-style rifle, specifically an M110 A1. It emphasizes ensuring the rifle's upper receiver is level, achieving correct eye relief, and using a torque wrench to tighten both the scope mount and rings to specific inch-pound values. The process includes critical steps for leveling the scope's reticle and alternating screw tightening patterns for even pressure.

Quick Summary

To properly mount a scope on an AR-style rifle, begin by leveling the upper receiver in a vise. Position the scope for correct eye relief, ensuring the rear is above the charging handle. Use a torque wrench to tighten the scope mount (e.g., 35 in-lbs) and scope rings (e.g., 18 in-lbs) using an alternating star pattern for even pressure.

Chapters

  1. 00:00Introduction
  2. 00:13Leveling the Upper Receiver
  3. 00:46Mounting the Scope Mount
  4. 01:14Positioning the Scope for Eye Relief
  5. 01:41Torquing the Scope Mount
  6. 02:25Installing the Scope Rings
  7. 03:19Leveling the Scope Reticle
  8. 04:04Torquing the Scope Ring Screws
  9. 05:01Tightening Technique (Star Pattern)
  10. 05:36Final Checks and Torque
  11. 06:08Final Level Check
  12. 06:11Conclusion

Frequently Asked Questions

What is the first step to properly mount a scope on an AR-15?

The first crucial step is to ensure your rifle's upper receiver is perfectly level in a vise. Use a bubble level on the Picatinny rail to confirm it's level before proceeding with any scope mount installation.

How do you determine the correct eye relief when mounting a scope?

For most shooters, proper eye relief is achieved when the rear of the scope is positioned just above the rifle's charging handle. This allows for a clear sight picture without the scope being too close or too far away.

What torque specifications are recommended for mounting a scope?

The torque specifications vary by mount and rings. For the Unity Mount shown, the clamp is torqued to 35 inch-pounds, and the scope rings are torqued to 18 inch-pounds. Always consult your specific product's manual.

What is the best technique for tightening scope ring screws?

It's essential to tighten scope ring screws in an alternating star pattern, not straight down. This ensures even pressure and prevents canting the scope. Aim to keep the gap between the ring halves as even as possible.

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