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How to Build Your Own AR 15 - Legally and Unregistered

Posted by 80-lower on Aug 28th 2017

How to Build Your Own AR 15 - Legally and Unregistered

Build Your Own AR 15 - Legally and Unregistered

So you're interested in learning how to build your own AR 15. Welcome to the exclusive AR 15 builder club brought to you by the world of 80 percenters (80% lower receivers) and your 2nd Amendment! You've probably heard a lot of mixed messaging about what it takes to build your own AR 15, so we're here to hopefully help clear up some the possible confusion and, more importantly, explore the legal avenues one could take to build a 100% legal unregistered AR 15. Let's begin! believes whole-heartedly in the traditional values that have made this country great. While we do not sponsor or endorse the gross crimes committed by those cowards who prey on innocent civilians, we do believe as Americans, we have been granted a constitutional right to defend our families and ourselves.

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Build Your Own AR 15

The journey to build your own AR 15 beings with the purchase of an 80% lower receiver. While in the purchase process consider purchasing an 80% lower jig­. The 80% lower jig will allow you to complete your 80% lower with the necessary precision.

Once you have secured your lower receiver and jig, all you need is a drill press (or hand drill), drill bits and end mills. Finishing an 80% lower can be easy and anyone with DIY skills can complete an 80% lower. To some, the thought of building your own AR 15 starting with an 80% lower may seem intimidating, but it shouldn't. Thousands of people have finished their own 80% lowers without an issue - experts and novices, alike.

If you’re considering building more than one AR-15, consider purchasing an 80% lower & jig pack, which will include a jig and up to 5, 80% lower receivers. These packages provide an all-in-one convenience to build your own AR 15.

While it is 100% legal to complete and build your own AR 15 on an 80% lower receiver without any type of serialization or registration, one should be aware of a few facts.

  • First, your firearm cannot be traced in the event it is lost or stolen.
  • Second, you may be called into question about the possession of such a firearm if your vehicle or home is ever searched by law enforcement. Although 100% legal, make sure you know the law and be even more certain you can defend your right of non-registration adequately.

To start building your own unregistered AR-15 (that only YOU will know about), check out our 80% lower & jig packs, AR 15 Rifle Build Kits, and our various other AR-15 parts that will assist you with building and completion of your AR 15.

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The Laws to Build Your Own AR 15

According to the Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE) the only part of the AR-15 that requires a Federal Firearms License (FFL) transfer at the time of purchase is the serialized lower receiver. This would refer to the serialization designated to a finished lower by the manufacturer prior to its sale. The only exception to this law would refer to the sale of 80% lower receivers, which the BATFE does allow to be sold without serialization or an FFL transfer.

An 80% lower receiver is simply a lower receiver which is inoperable due to in-completion on the part of the manufacturer. 80% lowers do not meet the BATFE’s legal definition of a firearm, due to the fire control group cavity remaining unmilled and in its original state. This is why it has received the name, “80% lower.”

As mentioned, the 80% lower receiver does not require an FFL transfer or serialization. Furthermore, any 80% lower receiver can be legally milled, drilled and made operable by the purchaser. As long as the purchaser himself or herself completes the milling for the fire control group, finishes the 80% lower for his or her own personal use, and does not sell the lower receiver after manufacturing.

The BATFE states: "Individuals manufacturing sporting-type firearms for their own use need not hold Federal Firearms Licenses (FFLs). However, we suggest that the manufacturer at least identify the firearm with a serial number as a safeguard in the event that the firearm is lost or stolen. Also, the firearm should be identified as required in 27 CFR478.92 if it is sold or otherwise lawfully transferred in the future."


If you consider yourself to be a proud, flag-waving, second amendment believing American, you might be a little weary of the media’s constant spewing of ‘anti-gun’ rhetoric. Logic itself should clear up the misconception that just because a gun is black, has a pistol grip, and resembles a military weapon, does not make it an “assault-weapon” or the root cause of an evil action.

Unfortunately, we are living in a day when politics and political pandering have silenced common sense and logic — except at

While the current gun control lobby is focused on labeling and demonizing “assault weapons” such as the AR-15, we recognize the issue to be a much deeper one. Those whose ultimate goal is a socialist agenda would undoubtedly like to prevent the sale or require the registration of all such firearms.

While some deny this could ever happen in the United States, there are others who are preparing to sidestep this type of atrocity. This is one reason why the 80% lower is now in high demand.

Disarmament has never worked and it never will.

God bless the USA

(PLEASE NOTE: in no way sponsors the illegal manufacturing, sale, or possession of firearms. You are required to know and understand federal, state and local laws governing the ownership and completion of an 80% lower. Please verify your state requirements before purchasing an 80% lower receiver.)

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.