The term "full auto hammer AR-15" is somewhat misleading. A standard AR-15 platform rifle is not inherently capable of full-automatic fire. The ability to fire in full-auto mode requires specific modifications and, crucially, adherence to strict legal regulations. This article explores the mechanics of how full-auto functionality could be achieved in an AR-15, the legal ramifications, and the critical differences between semi-automatic and fully automatic firearms.
The Mechanics of Full-Auto Fire
Understanding how a full-auto AR-15 (or any full-auto firearm) operates requires looking beyond the hammer. While the hammer is a crucial component in the firing cycle, full-automatic fire necessitates a different mechanism entirely: the selector switch and a modified lower receiver.
A standard AR-15 possesses a selector switch that typically allows for "safe," "semi-automatic" (one shot per trigger pull), and "burst" (a short, pre-set number of shots per trigger pull) modes. To achieve full-auto functionality, the lower receiver must be modified, often replacing internal parts. This modification allows the trigger and sear mechanism to remain engaged, continuously cycling the action and firing until the trigger is released or the magazine is empty. This is fundamentally different from a semi-auto AR-15, where the trigger must be released and re-engaged for each shot.
A modified hammer might be part of the modification process to ensure reliable full-auto cycling, but it is not the sole element responsible for enabling full-auto functionality.
Legal Considerations: NFA and Registration
The legality of owning and operating a full-auto AR-15 is strictly governed by the National Firearms Act (NFA) of 1934. The NFA classifies machine guns (which includes full-auto firearms) as regulated items requiring registration with the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). This involves a lengthy and rigorous application process, significant background checks, and a substantial tax stamp.
Furthermore, many states have their own regulations that may further restrict or ban the ownership of full-auto firearms, irrespective of federal regulations. It is crucial to be completely aware of both federal and state laws regarding ownership and use before even considering modifications to achieve full-automatic fire.
Improperly modifying a semi-automatic firearm to function as a fully automatic weapon is a serious federal crime, carrying significant penalties.
Semi-Auto vs. Full-Auto: Key Differences
It's vital to understand the crucial distinction between semi-automatic and fully automatic firearms:
- Semi-automatic: One shot is fired per trigger pull. The action cycles automatically, reloading the next round, but only fires a single round per trigger activation.
- Fully automatic: The firearm continues to fire as long as the trigger is depressed, cycling the action and firing continuously until the trigger is released or the magazine is empty.
Conclusion
While the terminology "full auto hammer AR-15" might seem to suggest a simple modification, the reality is significantly more complex and legally sensitive. Achieving full-automatic functionality in an AR-15 requires substantial modification to the lower receiver and other internal components, far beyond merely replacing the hammer. Understanding the intricate mechanics and stringent legal regulations surrounding full-auto firearms is paramount before even considering such modifications. Always prioritize safe and legal firearm handling practices. This article is for informational purposes only and does not constitute legal advice. Consult legal counsel and relevant authorities for accurate information on firearm regulations in your jurisdiction.
