Magpul Instructions - Index Stop M-LOK

Published on May 14, 2026
Duration: 1:33

This guide details the installation of the Magpul M-LOK Index Stop, designed to provide a consistent reference point for safe support hand placement on M-LOK handguards. The half-slot design enhances control and comfort. Proper T-nut adjustment for handguard thickness is crucial for secure mounting.

Quick Summary

The Magpul M-LOK Index Stop provides a consistent reference point for safe support hand placement on M-LOK handguards. Its half-slot design enhances control and comfort. Installation involves aligning the T-nut, inserting the screw, and tightening with a 5/32-in hex key, ensuring the T-nut is adjusted for handguard thickness.

Chapters

  1. 00:11Introduction to M-LOK Index Stop
  2. 00:22Installation Steps Overview
  3. 00:30T-Nut Adjustment
  4. 00:51Pre-Installation Alignment
  5. 00:57Mounting the Index Stop
  6. 01:15Final Tightening and Function
  7. 01:18Benefits of the Index Stop

Frequently Asked Questions

What is the primary purpose of the Magpul M-LOK Index Stop?

The Magpul M-LOK Index Stop is designed to provide a consistent reference point for safe support hand placement on M-LOK handguards, enhancing control and comfort.

What tools are needed to install the Magpul M-LOK Index Stop?

You will need a 5/32-in hex key for tightening the screw. An optional 7-mm wrench can be used to hold the T-nut in place if needed.

How do you ensure the Magpul M-LOK Index Stop is properly seated?

Proper seating involves adjusting the T-nut for the handguard's thickness, allowing one or two threads to show. Applying downward pressure while starting the screw also helps.

What is the function of the T-nut during installation?

The T-nut rotates 90 degrees as the screw is tightened, clamping against the inside of the M-LOK slot to secure the index stop to the handguard.

More Tactical & Gear Videos You Might Like

More from Magpul

View all →