Quick Tip: Correct Scope Height - AR-15 vs Conventional Rifles

Published on May 12, 2021
Duration: 2:20

This guide details the correct scope mounting technique for AR-15 platforms, emphasizing the ergonomic differences compared to conventional rifles. It highlights the necessity of higher mounts on AR-15s due to their straight-line design, preventing common errors that compromise cheek weld and eye alignment. The information is presented by Brownells technical staff, offering practical advice for optimal optic setup.

Quick Summary

AR-15s require higher scope mounts than conventional rifles due to their straight-line recoil path and in-line stock design. Mounting scopes too low on an AR-15 prevents a proper cheek weld and eye alignment, a common mistake. AR-specific cantilever or high-profile mounts are recommended for optimal ergonomics.

Chapters

  1. 00:00Common Mounting Mistakes
  2. 00:37AR-15 Ergonomics vs. Conventional Rifles
  3. 01:06Stock Drop Comparison
  4. 01:51Recommended AR Mounts

Frequently Asked Questions

Why do AR-15s need different scope mounts than traditional rifles?

AR-15s have a straight-line recoil path and a stock that is in-line with the receiver's top rail. This design necessitates higher scope mounts compared to conventional rifles, which typically have a stock that drops down, allowing for lower rings and proper eye alignment.

What is the common mistake when mounting a scope on an AR-15?

A frequent error is attempting to mount the scope as low as possible, a practice suitable for conventional rifles. On an AR-15, this low mounting can prevent a proper cheek weld and misalign the shooter's eye with the optic's eyepiece.

What type of scope mount is generally recommended for an AR-15?

AR-15 specific cantilever scope mounts or high-profile dual-ring mounts are generally recommended. These are designed to place the optic at the correct height for proper eye alignment and a comfortable cheek weld on the AR platform.

How does stock drop affect scope mounting?

Conventional rifles often feature a stock with a noticeable drop from the receiver, which allows for lower scope rings. The AR-15's design lacks this significant stock drop, meaning higher mounts are required to achieve the same ergonomic benefits and sight alignment.

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