AR-9 on a Budget Part 1: Magazine and Lower Options

Published on July 7, 2020
Duration: 14:32

This guide outlines options for building a budget-friendly AR-9, focusing on magazine compatibility and lower receiver choices. It details the KAK Colt Magwell Adapter, Torkmag MagDapt for Glock mags, Mean Arms Endomag for PMAGs, and dedicated PSA AR-9 lowers. The expert analysis highlights pros and cons, reliability, and cost-effectiveness, recommending a dedicated lower for those starting from scratch.

Quick Summary

Building a budget AR-9 involves choosing between dedicated lowers and conversion kits, with magazine compatibility being key. Options include the KAK Colt Magwell Adapter, Torkmag MagDapt for Glock mags, and Mean Arms Endomag for PMAGs. While conversion kits offer lower entry costs, dedicated lowers like the PSA model provide better reliability and features like LRBHO.

Chapters

  1. 00:00Introduction to Budget AR-9 Builds
  2. 00:54Magazine and Lower Options Overview
  3. 01:32Colt vs. Glock Magazines
  4. 02:11KAK Industries Colt Magwell Adapter
  5. 03:48Torkmag MagDapt Glock Adapter
  6. 05:41Mean Arms Endomag PMAG Conversion
  7. 08:21Endomag Reliability Issues
  8. 10:15PSA Dedicated AR-9 Lower
  9. 11:17Final Comparison and Recommendations

Frequently Asked Questions

What are the main magazine options for a budget AR-9 build?

For a budget AR-9, consider Glock magazines (cheap, available), Colt SMG-style magazines (aesthetically pleasing but pricier), or conversion systems like the KAK Colt Magwell Adapter, Torkmag MagDapt for Glock, and Mean Arms Endomag for PMAGs.

Which AR-9 conversion system offers the best budget value?

The Torkmag MagDapt system is highlighted as the best budget value, estimated at $160 for six magazines. It requires modifying Glock magazines but demonstrated high reliability over 450 rounds.

What are the reliability concerns with the Mean Arms Endomag?

The Mean Arms Endomag, a PMAG conversion insert, showed near 0% reliability in testing, with frequent chambering and cycling failures. A significant safety issue is that removing the magazine also removes the ejector, complicating live round clearing.

Should I choose a dedicated AR-9 lower or a conversion kit for a budget build?

While conversion kits can be cheaper initially, a dedicated AR-9 lower, like the PSA model, is often recommended for better reliability and integrated features such as LRBHO, especially if starting a build from scratch.

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