cc-settings-icon BUILD AT HOME
80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required.
Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.

80 Lower Jigs

What is an 80% Lower Jig?

Receiver jigs are sophisticated mechanical templates (or “fixtures”), that make it SIMPLE and FAST to perform a repeatable mechanical process. Our jigs provide you an outline for working on an 80% lower receiver blank, and creating your very own firearm! Our jigs are built for a lifetime of use, and can be used on both the AR-15 and .308 platforms. Best of all - Our jigs make creating your very own firearms easy and affordable!

Jigs allow you to transform an 80 percent lower receiver, viewed by the ATF as an unregulated hunk of metal, into a fully functional AR15 receiver! Not only do we sell world-class 80% lower receivers for you to make a precision rifle, we are home to the world’s first router-based jig to complete milling your lower.

Our jigs allow you to easily take tools found around your home to complete your 80% lower, while producing results similar to a CNC machine in a professional machine shop. Order one of our 80 lower jigs and corresponding toolkits, and the only items you’ll need to finish the process at home are:

One of our industry leading jigs and corresponding toolkits    A high quality and precision milled 80% lower
Any normal drill or drill presses if you’re so inclined A standard router used for woodworking
A little WD40   

 Why Use 80% Lower Jigs?

  • NO FFL required! 

  • No experience required! Comes with easy-to-follow instructions and sets you up for seamless cutting and drilling of a receiver. Perfect for beginner gunsmiths

  • Saves you money in the long run. Our lower jigs can be reused for completing subsequent 80% lowers

  • Includes all the parts you need for machining, including a drill bits kit, fixture plates, and end mill bits

  • Quicker and easier build process that can complete a lower or frame in under an hour

  • Offers assurance of production quality since the 80% jig is made of high-quality, durable material

  • High quality, American-Made Products

Do You Need a Special License for Buying or Owning an 80 Lower Jig?

Many people are apprehensive about buying the 80% jig because they feel like they might be asked for a license. Under federal law, the jig itself is not considered a firearm in any way. It is simply a kit that helps with building a firearm. As such, no license has ever been needed to purchase an 80 lower jig.

How 80% Jigs Work

The 80% jig is a collection of tools, measurements, and physical guides used to make a firearm on your own, allowing you to make your receiver functional. It is made of aluminum, and steel, and the jigs and parts are made specially to cater to the firearm being built, so be sure to purchase the right one for your particular rifle or pistol.

How AR-Type 80% Jigs Work

The difference between the 80% jigs and the AR-type 80% jigs is the type of firearm being made. The jig will come with its own parts and a drilling template for you to create the custom firearms you have in mind.

No Experience Necessary for Using 80% Jigs

The good thing about working with jigs is that you do not need a lot of experience to work on them. They are perfect for beginner gunsmiths who are just starting out on finishing AR-type firearms. The instructions are transparent and easy to follow, and you will also get a drilling template that you can use for your firearm. The only thing you need to know is the basics of firearm assembly.

Unparalleled Quality and Engineering

Made of heavy machined aluminum here in the USA, these jigs are designed to be used for years. Care is taken in every step of our manufacturing process, with extreme measures in our quality control process to ensure any 80% lower receiver you manufacture will be compatible with the full array of AR-15 or .308 equipment available on the market.

Choosing the Right Jig

Choosing a jig is simple! First, what kind of rifle are you looking to build? We offer AR15 jigs and AR10 jigs designed to mill out 80% AR-15, AR-10, and AR-9 lower receivers for universal milspec compatibility. 

Building an 80% Glock Lower? We also offer a GST-9 jig and Glock build kits for finishing your Glock frames.

Can’t decide where you want to start or want to future proof your setup? We offer the world’s simplest most versatile multi platform option that allows you to quickly and easily mill out a variety of lowers. The Easy Jig® Gen 3 upended the industry and can be used for years to build a personal collection of homemade firearms.

Ready to hit the ground running? We offer everything you need to get started in our Starter Kit. Packages for AR-15 and AR-308 lower receivers available.

We stand by all our products with a lifetime guarantee!