May, 18

AR 15 Full Auto Conversion: A Beginner’s Guide

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Are you someone who enjoys tinkering with firearms and wants to take your AR-15 to the next level? Then you may have heard about full-auto conversion kits that can give your rifle a rapid-fire capability. But before we dive into how to make an AR-15 full auto, it's essential that we discuss the legality of such modifications.

As gun laws vary by state and country, converting a semi-automatic rifle into an automatic one is illegal in many places, without proper licensing or permits. Before attempting any modifications on your firearm, it's crucial to do thorough research on local laws and regulations. With that being said, let's explore what conversion kits are available for those who are legally able to modify their rifles.

If you're interested in learning more about how to make an AR-15 full auto within legal means, keep reading for our comprehensive guide on different types of conversion kits and the necessary steps involved in installation.

How to Make an AR 15 Full Auto

If you're a gun enthusiast, you've probably heard of the popular AR-15 rifle. The standard version of this rifle is semi-automatic, meaning it can only fire one bullet per trigger pull. However, with some modifications and technical know-how, it's possible to convert your AR-15 into a fully automatic weapon that can fire multiple rounds per second.

Is It Legal to Convert an AR-15 to Full Auto?

Before we dive into the details of how to make an AR 15 full auto, let's first address the elephant in the room: is it legal? The short answer is no. In America and many other countries around the world, converting a semi-automatic firearm into a fully automatic one without proper licensing from authorities is strictly prohibited.

In fact, owning or manufacturing a machine gun without proper authorization carries severe penalties including hefty fines and imprisonment for several years. So before proceeding any further with this guide on making your own full auto-capable weapon system out of an existing semi-auto gun like an ar 15 platform-based firearm; do thorough research about local laws that regulate such activities.

Understanding How Semi-Automatic Guns Work

To make your own custom full-auto conversion mechanism for your ar 15 platform-based rifle or pistol requires extensive knowledge about how firearms work at their core level especially when they operate as semiautomatic weapons.

Essentially speaking; every time you pull the trigger on your regular (semi-)automatic firearm like Armatix Smartgun or Springfield XDS mod2 vs Hellcat pistols based on .9mm ammo caliber specifications; it releases energy stored within its internal hammer which then strikes against firing pin located inside breech bolt thereby igniting primer inside ammunition cartridge casing resulting in propelling bullet forward through barrel towards target aim point via rifling grooves present therein along its lengthwise axis route trajectory path either manually operated bolt carrier group or gas-operated piston assembly.

The Full Auto Conversion Process

Now that we understand the basics of how a semi-automatic firearm works, let's move onto the process of converting it into a fully automatic weapon. Here are some steps to follow:

Step 1: Disassemble Your AR-15

Before you can begin modifying your AR-15, you'll need to disassemble it completely. Make sure that all parts are clean and free of debris before proceeding.

Step 2: Install a Full Auto BCG

One of the main components that needs to be replaced in order for your AR-15 to function as fully automatic is the bolt carrier group (BCG). Install an aftermarket full auto BCG like Radian Weapons Raptor-LT which has been specifically designed for this purpose.

Step 3: Replace Trigger Mechanism with Drop-In Auto Sear (DIAS)

The next step is replacing your trigger mechanism with a drop-in auto sear (DIAS) unit. This will allow your rifle or pistol platform-based gun system like Colt M4 Carbine or Sig Sauer MPX PCC models respectively according them specs;to fire multiple rounds per second when trigger pulled once without needing any additional manipulations beyond just keeping finger on trigger continuously until desired number shots fired from magazine capacity reaches empty state status level threshold point .

Step 4: Reassemble Your AR-15 and Test Fire It

After installing both full-auto BCG and DIAS, reassemble everything carefully following manufacturer’s guidelines specifications while keeping all safety measures in mind at every stage; then test fire weapon on range under controlled environment circumstances such as firing range where allowed by law depending upon location regulations governing their use restrictions imposed by local authorities before taking them out into uncontrolled environments outside these designated areas where further precautions must be taken into consideration regarding public safety concerns related potential hazards involved due accidental discharge mishaps.


Converting an AR-15 to full auto is illegal in most places around the world. Attempting to do so without proper authorization can lead to severe penalties. It's important for gun enthusiasts and hobbyists alike to understand these laws before attempting any modifications on their firearms.

That being said, if you're interested in learning more about how semi-automatic guns work or want tips on improving your accuracy with a regular AR-15 rifle or pistol platform-based firearm; there are plenty of resources available online that provide detailed information about various aspects of using and maintaining them properly.


What is an AR 15 full auto rifle and how does it work?

An AR 15 full auto rifle is a firearm that fires multiple rounds with a single trigger pull. It works by using the recoil energy from each fired round to eject the spent casing and load another round into the chamber from the magazine. The full-auto function on an AR 15 allows for continuous firing as long as there is ammunition in the magazine.

To convert an AR-15 to full auto, you would need to modify or replace several key components of your firearm, including adding a drop-in auto-sear (DIAS), replacing certain fire control parts with automatic versions, or purchasing an already modified lower receiver. However, it's important to note that converting any semi-auto rifle into a fully automatic weapon without proper licensing and registration can result in serious legal penalties.

Is it legal to make my own AR-15 full auto?

No, it is not legal for individuals without special licensing from ATF (Bureau of Alcohol Tobacco Firearms & Explosives) permission known as NFA tax stamp approval or other government permits under different circumstances like law enforcement/military use etc., which would allow them access to these types of firearms modifications legally.

It's crucially important that you understand all federal laws regarding gun ownership before making any alterations or modifications whatsoever on your firearms so you don't break any laws inadvertently when trying out new things like making your own fully-automatic weapons at home!

Can I buy a pre-made conversion kit online?

No! The sale of conversion kits that enable semi-automatic rifles such as Ar-15s has been illegal since May 19th of 1986 after National Firearms Act was passed by Congress in accordance with strict regulations against unlawful manufacturing/possession/distribution/sale activities associated around illegal guns sales activities – particularly those involving modified weaponry meant for military-grade purposes exclusively designed only available through lawful channels.

Therefore if someone is found selling or buying these types of conversion kits after this date, they will be subject to federal prosecution under the law.

Is it possible to modify my AR 15 myself without any professional help?

Modifying your AR-15 yourself can potentially lead to serious safety issues if done improperly. While some modifications like changing the stock and grip are simple enough for most people with basic knowledge of firearms, others like converting a semi-auto rifle into a fully automatic weapon require specific expertise that few people possess.

Attempting such modifications without proper guidance can result in personal injury or death. It's always best to consult with licensed professionals who have experience in firearm modification before making any changes yourself.

What are the potential consequences of attempting an illegal conversion?

Attempting an illegal conversion on your firearm could land you in some serious legal trouble including hefty fines and imprisonment! Making unauthorized changes/modifications on firearms that improve firing speed or power is considered criminal activity punishable by law enforcement agencies all over America today – which include ATF (Bureau of Alcohol Tobacco Firearms & Explosives) agents who investigate these sorts illicit activities constantly.

It's important as well furthermore educate ourselves about what constitutes legally permissible behavior when it comes down gun ownership regulations so we don't inadvertently violate any laws while trying out new things related around weapons usage practices at home!

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