Cheap Fix to a Sloppy AR Upper & Lower

Published on September 8, 2024
Duration: 1:00

This guide, presented by GUNBROS, details how to fix the common issue of 'slop' or wobble between AR-15 upper and lower receivers. It covers both temporary solutions like the Accuwedge and more permanent methods using integrated tension screws found on receivers like the Aero Precision M4E1. The instruction emphasizes that while often cosmetic, this slop can affect precision shooting.

Quick Summary

Fix AR-15 receiver slop with simple solutions like the Accuwedge or integrated tension screws. The Accuwedge is a drop-in rubber piece, while receivers like the Aero Precision M4E1 feature an adjustable screw accessible through the grip screw hole, providing a more permanent and precise fit to eliminate wobble.

Chapters

  1. 00:00Identifying AR-15 Receiver Play
  2. 00:26The Accuwedge Solution
  3. 00:36Integrated Tension Screws

Frequently Asked Questions

How can I fix the wobble between my AR-15 upper and lower receivers?

You can fix AR-15 receiver wobble using a temporary Accuwedge inserted between the receivers, or more permanently with an integrated tension screw found on receivers like the Aero Precision M4E1, adjusted via the grip screw hole.

What is an Accuwedge and how does it work?

An Accuwedge is a small rubber or polymer insert placed between the AR-15's upper and lower receivers, typically behind the take-down pin. It creates tension to eliminate physical movement and improve the receiver fit.

Does receiver slop affect AR-15 accuracy?

While often considered cosmetic, significant receiver slop on an AR-15 can negatively impact precision shooting accuracy. Eliminating this wobble ensures a more stable platform for consistent shot placement.

What is the advantage of an integrated tension screw on an AR-15 lower receiver?

Integrated tension screws, like those on the Aero Precision M4E1, offer a more permanent and adjustable solution to receiver slop. They allow fine-tuning the fit directly through the grip screw hole for a consistently tight receiver interface.

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