Converting an AR15 Lower Receiver from Full Auto to Semi Auto: What You Need to Know
When it comes to modifying your AR15 lower receiver, it is crucial to understand the legal and mechanical implications of upgrading or downgrading its capability. This article aims to clarify the differences between a full auto and semi-auto capable lower receiver and provide guidance on how to ensure your firearm remains fully compliant with legal standards.
Understanding Full Auto Capable and Semi-auto Receivers
Often, product descriptions may indicate that a stripped lower receiver is "full auto capable." This term usually refers to the physical design of the receiver housing, which could potentially accommodate full auto components. However, being "full auto capable" does not automatically mean your firearm is a true full auto weapon. The distinction lies in the ability to modify it to fire in fully automatic mode without specific licensing and approval.
Types of AR15 Lower Receivers
Legal Registered Machine-Gun: If you have a legal registered machine-gun, it should be well-documented and complies with all regulations. Such weapons are worth tens of thousands and have special permits. You may already know the procedures for modifying it for full auto. Illegal Machine-Gun: If your lower receiver is considered an illegal machine-gun, it should be destroyed immediately to avoid legal consequences. It would be unwise to attempt any modifications. Semi-Only Lower Receiver: If you have a semi-only lower with all the cosmetically marked positions but lacks the third hole for the auto-sear pin and has an FCG pocket that isn’t the proper width, you don’t need to worry about modification since it’s already designed for semi-automatic operation.Legal and Safety Considerations
Modifying an AR15 lower receiver to full auto is illegal in most countries, including the United States. The parts needed to convert a semi-auto receiver to full auto typically require special modifications including welding and altering the internal components of the receiver. Maintaining a semi-auto configuration is not only legally necessary but also enhances safety and complies with local regulations.
Registration and Licensing
Any alteration that turns a semi-auto AR15 into a firearm capable of full auto fire would require a special Federal license and a review process by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). This process is rigorous and involves extensive documentation, background checks, and submitting a modified firearm for inspection.
Common Misunderstandings
Misunderstandings often arise when product descriptions suggest that a lower receiver can be easily modified to full auto operation. It is important to clarify that AR15 receivers are specifically designed for semi-automatic fire alone. To modify it for full auto fire, extensive changes and special licensing are required. Simply acquiring parts is insufficient.
Conclusion
In summary, if your AR15 lower receiver is capable of full auto fire, it is not a standard AR15 but likely an M16 lower receiver. Attempting to convert a standard AR15 into a full auto firearm is illegal and can result in severe legal consequences. If you wish to operate your firearm in full auto mode, ensure you have the appropriate legal documentation and licensing. Please handle your firearm responsibly and consult a reputable gunsmith or legal advisor for any modifications.