Cheap Fix to a Sloppy AR Upper & Lower

Published on September 8, 2024
Duration: 1:00

This video addresses the common AR-15 receiver 'slop' issue, offering two solutions. The Accuwedge provides a quick, inexpensive fix for wobble, while the Aero Precision M4E1 lower features an integrated tension screw for a more permanent, adjustable solution. Both methods aim to improve the upper-to-lower receiver fit for better stability.

Quick Summary

Fix AR-15 receiver slop with an Accuwedge, a simple rubber insert, or integrated tension screws found on models like the Aero Precision M4E1. These solutions eliminate wobble for improved stability and potentially better shooting precision.

Chapters

  1. 00:00Identifying AR-15 Receiver Play
  2. 00:26The Accuwedge Solution
  3. 00:36Integrated Tension Screws (Aero Precision M4E1)

Frequently Asked Questions

What causes slop in an AR-15 upper and lower receiver?

Slop in an AR-15 occurs due to manufacturing tolerances between the upper and lower receivers. While often cosmetic, it can impact shooting precision. Solutions include simple wedges like the Accuwedge or integrated tension screws found on some receivers.

What is an Accuwedge and how does it work?

An Accuwedge is a small, inexpensive rubber or polymer insert placed between the AR-15's upper and lower receivers. It fills the gap, creating a tighter fit and eliminating wobble without permanent modification.

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

Integrated tension screws, like those on the Aero Precision M4E1, allow for fine-tuning the fit between the upper and lower receivers. This provides a more permanent and adjustable solution to eliminate wobble and improve stability.

Is receiver slop a serious functional problem for an AR-15?

Generally, minor receiver slop is not a critical functional problem for most AR-15 applications. However, for precision shooting where consistent alignment is crucial, it can be detrimental. Solutions aim to improve this consistency.

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