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AR 15 80 Percent Lower Frequently Asked Questions

What is an AR 15 80% Lower Receiver?

An 80% lower receiver is a piece of material (Aluminum) which has been partially completed to a certain point.  With readily available tooling from local hardware store and the right techniques, the lower can be transformed into a working firearm.  It is not required to be transferred through a FFL  with all the federal paperwork like its finished counterpart, the completely finished lower receiver.  These factors make for easy purchasing for home gunsmiths and hobbyists for personal use.

Is a FFL required to/build a firearm for personal use?

No. You are building the firearm for yourself for your own personal use which is legal under the Gun Control Act of 1968. This is on the ATF’s website under their FAQ page. You can see it here http://www.atf.gov/firearms/faq/firearms-technology.html .

As long as the following laws are met there are no problems:

  1. You can legally own the firearm in question in the state in which you live
  2. You are building the firearm for your personal use (not your cousin, brother, or aunt) for yourself.

It is a good idea to mark your firearm somehow so that should it ever be lost or stolen you have a way to identify it and report its loss to your local law enforcement. Please check your local and state laws.

What tools are required or recommended to finish my lower receiver?

Transforming an  80% AR-15 lower receiver into a finished lower receiver can be accomplished using a variety of readily available tooling and proper techniques. The most popular methods involve using a manual hand-held type electric drill or a drill press. In fact, most of our customers already own one or more manual electric drills that are perfectly suited for the task. Regardless, once you have chosen the type of drill you wish to use, you will also need a jig set which we stock for your convenience. The jig helps ensure that the 80% lower is properly machined and that high tolerances are initiated and maintained.

Please refer to our tools list below for as an easy reference…

Tools Used:

Does the 80% lower receiver include instructions?

No, but with a simple search on the internet there are various sites with instruction to complete your 80% lower receiver.

Does the AR 15 Jig you sell have instructions to finish my lower receiver?

Yes. You will find that we include complete, comprehensive instructions with our jig sets that cover virtually every aspect of using the jig to finish your lower receiver.

Do you offer custom engraving of my 80% lower receiver(s)?

At our fully equipped machine shop, we are capable of offering custom engraving for your lower receiver(s). As each customer’s requirements are unique, please contact us to discuss what you would like to engrave on your units. We are able to offer substantial discounts on orders of 25 units or more so encourage you to reach out to us for more information.

What other resources of information are available to assist me?

There are many firearm resources on the internet that can help you hone your home gunsmithing abilities. Two resources that our customers find particularly useful are:

  1. Weapons Guild – “The premier firearm building forum on the internet where builders help builders.”
  2. Home Gunsmith – “The Internet’s most complete source of How-To information for the home/hobby gunsmith and enthusiast.”
  3. Gun Parts Plus – Exploded AR 15 Diagram

What can the 80% AR 15 lower receiver be used for?

It is a great starting point for many firearm calibers including, but are not limited to:

  • .223-5.56mm
  • 6.8 SPC
  • 7.62x39mm
  • 5.45x39mm
  • 6.5 Grendel
  • .50 Beowulf
  • 9mm
  • .45 ACP

Why is the AR-15 80% lower receiver GunPartsPlus.com sells so popular?

Not only is the quality extremely high, but the amount of parts available allow for a virtually unlimited of configurations and combinations to satisfy any gun enthusiast. The fact is that any mil-spec based commercial product for the AR-15 will work with our 80% AR-15 lower receiver.

If you have more questions, please contact us and we will be happy to answer them and assist you any way that we can.