AR-15 Pistol

Published on November 21, 2012
Duration: 15:35

This guide outlines the key considerations for building a legal AR-15 pistol, emphasizing crucial steps like starting with the correct lower receiver and understanding barrel length implications. It highlights the importance of the buffer tube for functionality and accuracy, and recommends specific accessories for ergonomics and modularity. The information is presented with the authority of an experienced firearms instructor, focusing on practical build advice and legal compliance.

Quick Summary

Building a legal AR-15 pistol requires starting with a stripped lower receiver designated as a 'pistol' on the ATF Form 4473, ensuring it was never a rifle. A 10.5-inch barrel is recommended for reliability, and the buffer tube is essential for function and accuracy. Avoid vertical foregrips, as they can reclassify the firearm as an 'Any Other Weapon' (AOW).

Chapters

  1. 00:35Introduction to AR-15 Pistols
  2. 01:13Build Considerations and Legal Pitfalls
  3. 02:15Barrel Length and Reliability
  4. 02:53The Buffer Tube System
  5. 03:48Lower Receiver Legality
  6. 06:25Foregrip Restrictions
  7. 09:09Accessories: Handguards and Sights
  8. 11:35Recoil Management and Ergonomics
  9. 13:54Sling Systems and Conclusion

Frequently Asked Questions

What is the minimum recommended barrel length for an AR-15 pistol?

For reliability on the AR platform, a 10.5-inch barrel is often recommended for AR-15 pistols. While shorter barrels like 7.5 inches exist, and longer ones like 11.5 inches are also common, 10.5 inches strikes a good balance for functionality and compactness.

How do I legally build an AR-15 pistol?

Crucially, you must start with a stripped lower receiver legally designated as a 'pistol' or 'virgin lower' on the ATF Form 4473. It must never have been configured as a rifle first to remain a legal pistol and avoid NFA regulations.

Can I add a vertical foregrip to an AR-15 pistol?

No, vertical foregrips are legally restricted on pistols. Adding one can reclassify your firearm as an 'Any Other Weapon' (AOW), which is a serious legal violation requiring NFA registration and potentially hefty fines.

What are some recommended accessories for an AR-15 pistol build?

Popular and functional accessories include Magpul MBUS flip-up sights for a compact sighting solution, an ATI Scorpion Grip for ergonomics, and a Magpul MS3 sling for versatile carry options. An ambidextrous safety from Battle Arms Development also enhances control.

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