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.
cc-gun-icon INCREDIBLY PRECISE
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.
cc-hand-icon RIDICULOUSLY EASY
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.
cc-thumbs-icon 100% SATISFACTION GUARANTEED
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 FAQ

Q: What is an 80 lower receiver?

A: An 80 lower receiver is an unfinished firearm component that is not considered a firearm until it has been completed. We are the largest manufacturer and have many different lowers available here

 

Q: Can I purchase an 80 lower receiver online?

A: Yes, you can purchase an 80 lower receiver online and it will ship right to your door- No FFL required. We have a wide selection of 80 lowers available here. Just be sure to check your federal,state and local laws as they may have specific regulations. Individuals prohibited by the Gun Control Act are prohibited from purchasing 80 lowers. 

 

Q: What tools do I need to finish an 80 lower receiver?

A: You will need a jig, and basic hand tools such as a router, drill and vise. You could also finish an 80 lower by using a drill press or milling machine. We have a detailed blog explaining everything you need to get started here

 

Q: Do I need a license to purchase or finish an 80 lower receiver?

A: No, you do not need a license to purchase or finish an 80 lower receiver for personal use. However, it is important to check your state and local laws as they may have specific regulations. We have a blog explaining the laws in each state here

 

Q: Are 80 lower receivers legal?

A: Yes, 80 lower receivers are legal to own and finish for personal use, as long as they are not used to create a firearm for illegal purposes. However, it is important to check your federal,state and local laws as they may have specific regulations. Individuals prohibited by the Gun Control Act are prohibited from purchasing 80 lowers. We have a blog explaining the laws in each state here

 

Q: Are there any restrictions on completing an 80 lower receiver?

A: It is important to follow all federal, state, and local laws regarding the finishing of an 80 lower receiver, including restrictions on the use of certain parts and the possession of certain types of firearms.

 

Q: What type of firearms can be made from an 80 lower receiver?

A: An 80 lower receiver can be used to create various types of firearms, including AR-15 and AR-10 rifles, as well as some Pistols by using a polymer frame such as the GST-9. 



Q: What is the difference between an 80 lower receiver and a stripped lower receiver?

A: An 80 lower receiver is an unfinished receiver that requires additional work to be completed, while a stripped lower receiver is a finished receiver that is ready to be assembled into a complete firearm. We don’t offer stripped lowers, however you can purchase an 80 lower from us here

 

Q: What materials are commonly used to make 80 lower receivers?

A: 80 lower receivers are typically made from aluminum, although some may also be made from polymer or other materials. We only manufacture our lowers using Aero Space Grade 6061 aluminum. You can view them here

 

Q: How much machining is required to finish an 80 lower receiver?

A: The amount of machining required can vary depending on the specific receiver and jig used, but typically involves drilling several holes and milling out the trigger group area and fire control cavity. Our jigs are known to be durable and efficient which help make this process easy. You can learn more about our jigs here

 

Q: Can I use a router instead of a milling machine to finish an 80 lower receiver?

A: Yes! It is very common to use a router to finish an 80 lower. We specialize in 80 Lower Router Jigs and even sell our own complete kit including a router here

 

Q: Do I need to serialize an 80 lower receiver?

A: If you intend to sell or transfer the firearm, you will need to serialize it in accordance with federal and state laws. However, if you are making the firearm for personal use, serialization is not required. However, it is important to check your state and local laws as they may have specific regulations.

 

Q: Are there any restrictions on shipping or receiving 80 lower receivers?

A: There are restrictions on shipping and receiving 80 lower receivers. Mostly, they can be shipped to your door with no FFL required. However, depending on some states, they may be shipped to and received by a Federal Firearms License (FFL) holder, who will then perform a background check and transfer the receiver to the buyer. It  is always a good idea to check your state and local laws as they may have specific regulations.



Q: Can I finish an 80 lower receiver without a jig?

A: While it is technically possible to finish an 80 lower receiver without a jig, it is strongly not recommended. Using a jig makes the process much easier and more precise. You can grab a jig here

 

Q: Are there any specific safety precautions I should take when finishing an 80 lower receiver?

A: Yes, it is important to wear appropriate personal protective equipment, such as safety glasses, ear protection, and a dust mask, and to follow all manufacturer instructions and guidelines to ensure safe and accurate completion of the receiver.

 

Q: Which 308 upper receivers fit your lowers?

Our 80% AR10 lower receivers are compatible with DPMS Gen1 upper receivers, AKA LR308. To learn more, check out our blog!

 

 

Q: Do your AR9 lowers have last round bolt hold open function?

Our 80% AR9 lower receivers do not have the 'last round bolt hold open' function as they are designed to pair with upper receivers that do have that function. To learn more about LRBHO, check out our blog!

 

Legal Disclaimer: 

The information in this blog is not legal advice. We are not lawyers. While we endeavor to keep all our blogs updated with the most accurate information, gun laws are ever changing and they can change quickly with little to complex differences in new legislation. Therefore, while we try our best to provide complete information, we acknowledge that everything you’re reading below may change (or already has changed).

Do not rely solely on the information provided by us or on this website for your purchase decisions. To ensure that you, the buyer, are acting in accordance with all federal, state laws and local ordinances, please be sure to do your own research and consult an attorney if necessary.

To see where some or none of our products can be shipped to, please see our full list of sensitive states here.