Gun Lower Parts

Best 80% Lower 2022

Top 13 80% Lower

80% Lower / 80% Lower Receiver – Editor’s Choice

When it comes to building your AR-15 rifle, one of the most important choices you will make is which 80% lower receiver to use. There are a lot of different options on the market, so it can be tough to know where to start.

To help you out, we’ve put together this handy buyer’s guide, complete with reviews of some of the best 80% lowers on the market. We’ll also answer some common questions about 80% lowers, so you can make an informed decision about which one is right for you.

What is an 80% Lower?

An 80% lower is a receiver that is only partially machined. It requires the user to finish the last 20% of machining to make it functional. Once it is finished, it can be used like any other lower receiver.

Why Would I Want an 80% Lower?

There are a few reasons why you might want to choose an 80% lower over a traditional one. First, it can be a fun and challenging project to complete the machining yourself. Second, it can be cheaper than buying a traditional lower receiver.

Lastly, in some states, it is legal to build your rifle as long as you use an 80% lower. This can be a good option if you live in a state with strict gun laws.

#1 F-1 Firearms – AR 80% Billet Raw Lower Receiver

F-1 Firearms - AR 80% Billet Raw Lower Receiver

View on Brownells View on OpticsPlanet

The F-1 Firearms 80% Billet Raw Lower Receiver is a high-quality, precision-machined receiver perfect for your next AR build. Machined from a solid block of aircraft-grade aluminum, this lower is then raw and ready to be finished with the coating of your choice. The trigger pocket is already machined in, so you can start building your dream AR right away. F-1 Firearms takes pride in their products and it shows with this lower receiver. If you’re looking for a top-quality 80% lower to start your next build, look no further than the F-1 Firearms 80% Billet Raw Lower Receiver!

Pros
  • Machined from a solid piece of billet aluminum, this 80% lower is more durable than a forged lower.

  • Conveniently prepped and ready to be finished with the markings of your choice.

Cons
  • Some people may find the machining process rough and unfinished.

  • You will need extra tools to complete this lower.

If you’re looking for a durable and long-lasting 80% lower receiver, the F-1 Firearms – AR 80% Billet Raw 80% Lower Receiver is a great choice. Machined from a solid piece of billet aluminum, this lower is more durable than a forged lower. Plus, it’s conveniently prepped and ready to be finished with the markings of your choice. However, some people may find the machining process rough and unfinished. You will need extra tools to complete this lower.

#2 James Madison Tactical AR-15 80% Polymer Gen2 Lower Receiver

James Madison Tactical AR-15 80% Polymer Gen2 Lower Receiver

View on Brownells View on OpticsPlanet

James Madison Tactical’s Gen2 Polymer Lower Receiver is a great option for those looking for an affordable 80% lower receiver. Made from tough polymer, this lower is lightweight and durable, and it can be easily finished with a few simple tools. It features a streamlined design that makes it easy to grip and handle, and it comes in a variety of colors to choose from. This lower is a great option for those looking to build a custom AR-15 on a budget.

Pros
  • Polymer construction makes for a lightweight and durable lower receiver

  • Markings are easy to see and precise

Cons
  • Some users have experienced problems with the takedown pin detent not staying in place

  • It may be more difficult to mill out than an aluminum lower receiver

#3 James Madison Tactical – 308 80% Lower Receiver with Jig

James Madison Tactical - 308 80% Lower Receiver with Jig

View on Brownells View on OpticsPlanet

James Madison Tactical makes some of the best 80% lowers on the market. Their 308 80% lower receiver is no exception. It comes with a jig, so it’s easy to finish and ready for your next build. This lower is precision machined from forged 7075 T6 aluminum and has a Type III hard coat anodized finish for durability. The jig is also made from 6061 T6 aluminum and is heat-treated for strength. This lower is compatible with all standard AR-10 parts, so you can build it exactly the way you want.

Pros
  • Lightweight

  • Easy to use

  • Affordable

  • High quality

Cons
  • Some users have reported issues with the gas key

#4 Anderson Manufacturing – AR-15 80% Lower Receiver

Anderson Manufacturing - AR-15 80% Lower Receiver

View on Brownells View on OpticsPlanet

The Anderson Manufacturing AR-15 80% Lower Receiver is a quality, durable option for those looking to build their rifle. It is made from a high-strength forged 7075 T6 aluminum, making it tough and reliable. The receiver is also anodized for durability and has laser-engraved markings for easy assembly. This 80% lower receiver is not considered a firearm and does not require a background check or FFL transfer. It is legal to purchase and own in all 50 states.

Pros
  • Excellent quality

  • Affordable price

  • Variety of colors available

Cons
  • Limited instructions

#5 Anderson Manufacturing – AR-15 80% Lower Receiver Anodized

Anderson Manufacturing - AR-15 80% Lower Receiver Anodized

View on Brownells View on OpticsPlanet

The Anderson Manufacturing AR-15 80% Lower Receiver is made from a solid block of aluminum and then black anodized for durability. It is shipped with the jig and all the necessary screws and pins needed to complete it. This receiver is machined to mil-spec tolerances, ensuring that it will fit perfectly with any other parts you may have. The entire process of machining this lower receiver is completed in the USA, ensuring that it meets the highest standards of quality.

Pros
  • Low price

  • Good quality

  • Easy to assemble

Cons
  • None found

#6 Polymer80 – AR 308 80% Lower Receiver

Polymer80 - AR 308 80% Lower Receiver

View on Brownells View on OpticsPlanet

Polymer80 is the perfect choice for builders who want an easy-to-use, reliable 80% lower receiver. The AR 308 80% lower is machined from a polymer composite, making it much lighter than aluminum receivers. It also requires no specialized tools or experience to complete, so even first-time builders can easily finish it in just a few hours.

Polymer80’s AR 308 80% lower is compatible with all standard AR-15 parts and magazines, so you can use it to build a custom rifle or pistol that’s exactly the way you want it. And because it’s made in the USA, you can be sure of its quality and durability.

Pros
  • Polymer80 rifle receivers are known for their high-quality and durable construction.

  • This style of a receiver is perfect for those looking to build a AR 308 from the ground up.

  • The 80% lower receiver offers a great starting point, allowing you to complete the remaining 20% of the rifle at your own pace.

Cons
  • There are not as many customization options available for polymer80 receivers when compared to other brands.

  • These receivers require more work to complete than some of the others on the market.

#7 Polymer80 – AR-15 80% Polymer Lower Receiver & Jig Kit

Polymer80 - AR-15 80% Polymer Lower Receiver & Jig Kit

View on Brownells View on OpticsPlanet

Looking to build your AR-15 rifle at home? Polymer80’s 80% lower and jig kit is the perfect starter set. The 80% lower is made of polymer, making it lightweight and easy to work with, and the jig kit comes with all the tools you need to get started. Plus, their helpful video tutorial series makes the building process simple.

Pros
  • Polymer construction makes it lightweight and durable

  • Easy to use 

  • Jig kit included

Cons
  • Some users have reported quality control issues with the receivers

#8 Juggernaut Tactical AR-15 80% Lower Receiver

Juggernaut Tactical AR-15 80% Lower Receiver

View on Brownells View on OpticsPlanet

The Juggernaut Tactical AR-15 80% Lower Receiver is a reliable and durable option for your next build. machined from a solid block of aluminum, it’s treated with a hard anodized finish to withstand wear and tear. It also includes raised tactile markings to ensure proper grip and easy manipulation, even in wet or icy conditions. Most importantly, it’s compatible with all standard AR-15 parts and components, so you can rest assured that your build will be top-notch.

Pros
  • Incredibly well-crafted; very solid and sturdy

  • Easy to install – all the necessary drilling and milling are already done for you

  • Includes a threaded bolt catch and screw, as well as a rear takedown detent hole

Cons
  • None that we could find

#9 Polymer80 – AR-15 80% Polymer Lower Receivers

Polymer80 - AR-15 80% Polymer Lower Receivers

View on Brownells View on OpticsPlanet

Polymer80 is one of the most popular 80% lower receivers on the market. Polymer80’s AR-15 80% polymer lower receivers are made from a high-strength, lightweight polymer that helps keep your build lightweight.

The Polymer80 kit includes everything you need to finish your lower receiver, including a jig, lower parts kit, and an upper receiver.

The jig includes easy-to-follow, step-by-step instructions. The lower parts kit includes all the necessary internal parts for your lower receiver. The upper receiver is NOT included. You will need to purchase a separate upper receiver to complete your AR-15 build.

Polymer80’s AR-15 80% polymer lower receivers are a great option for those looking for a high-quality, affordable 80% lower. Polymer80 offers a variety of colors to choose from, so you can find the perfect look for your build.

Pros
  • Lightweight

  • Durable

  • Easy to use

  • Affordable

Cons
  • May require gunsmithing

#10 Brownells – Stripped 80% Lower Receiver Forged

Brownells - Stripped 80% Lower Receiver Forged

View on Brownells

The Brownells BRN-180 Stripped 80% Lower Receiver is forged from 7075-T6 aluminum, making it incredibly durable. It has been precision CNC-machined to ensure a perfect fit and finish. This receiver requires no further machining and is ready to be finished with a variety of coatings or engravings.

This receiver is compatible with all standard AR-15 parts and magazines, making it a great option for those looking to build a custom rifle. It also features an integrated trigger guard and pistol grip for added comfort and convenience. With its high quality and easy installation, the Brownells BRN-180 Stripped 80% Lower Receiver is the perfect choice for anyone looking to build a custom AR-15.

Pros
  • Stripped, lightweight design

  • Forged aluminum construction

  • Available in black or flat dark earth finish

  • Easy to complete with standard tools

Cons
  • No instructions included

  • Requires purchase of separate jig

If you’re looking to build an AR-15 from the ground up, or just want a spare lower receiver to keep on hand, then you’ll need to start with an 80% lower. An 80% lower is simply an unfinished lower receiver that isn’t considered a firearm by the ATF. This means that you can purchase one without any background check or FFL transfer.

#11 Brownells – Brn-7 Stripped Lower Receiver

Brownells - Brn-7 Stripped Lower Receiver

View on Brownells

Brownells BRN-7 Stripped Lower Receiver is a state-of-the-art firearm component that delivers the quality and reliability you need to get the most out of your shooting experience. Machined from 7075 T6 aluminum, this stripped lower receiver is precision-engineered to mil-spec dimensions and features an integral trigger guard, enhanced magazine well ramp, and beveled mag release scallop. With its durable black anodized finish, the Brownells BRN-7 Stripped Lower Receiver looks great and provides superior corrosion resistance. For the ultimate in performance and value, choose the Brownells BRN-7 Stripped Lower Receiver.

Pros
  • Made from high-quality 7075 T6 aluminum

  • Hard coat anodized finish for superior durability

  • Can be used with any standard AR-15 parts kit

Cons
  • Some users have complained about the quality of the machining on this lower

  • There have been reports of the finish chipping easily

#12 Brownells 80% Lower Receiver

Brownells 80% Lower Receiver

View on Brownells

This Brownells BRN-10 Lower Receiver is machined from a solid block of 7075 T6 aluminum forging to mil-spec dimensions and features M4 feed ramps. It is finished in hard coat anodized black for durability and includes a bolt catch, magazine catch, selector switch, hammer, and trigger pins. This lower receiver is compatible with all AR-10 upper receivers and standard AR-15 components.

Pros
  • Made from high-quality materials

  • Durable construction

  • Precision machining

  • Easy to assemble

Cons
  • None

Whether you’re a first-time 80% lower builder or an experienced gunsmith, the BROWNELLS BRN-10 Lower Receiver is a great choice for your next AR-10 build. Made from high-quality materials and precision machined to ensure a tight fit, this lower receiver is easy to assemble and built to last. Plus, there are no cons! So if you’re looking for a top-quality 80% lower receiver, the BROWNELLS BRN-10 is a perfect choice.

#13 Brownells – Lower Receiver

Brownells - Lower Receiver 80% Lower

View on Brownells

The Brownells BRN-180M Lower Receiver is the perfect option for those looking for a high-quality, durable lower receiver. Machined from forged 7075 T6 aluminum, this receiver is built to last. It has been hard coat anodized matte black to provide superior corrosion and wear resistance. The BRN-180M also features a Mil-Spec trigger and magazine release, making it compatible with most standard AR-15 components. For those looking for a top-of-the-line lower receiver, the Brownells BRN-180M is a perfect choice.

Pros
  • Made from a high-quality aluminum forging

  • MIL-SPEC Type III hard coat anodized finish for wear and corrosion resistance

  • Broached magwell for a secure grip and easy reloading

  • M4 feed ramps for reliable feeding of ammunition

Cons
  • None found

80% Lower Receiver FAQ

What are the rules for an 80% lower?

An 80% lower is a lower receiver that is only 80% complete. It is not considered a firearm by the ATF and does not require a background check or serial number. You can finish an 80% lower at home with common hand tools, and it is perfectly legal to do so.

What are the benefits of an 80% lower?

An 80% lower offers several benefits over a traditional lower receiver. First, it is much easier and cheaper to build your AR-15 from an 80% lower than it is to buy one outright. Second, you can customize your AR-15 exactly to your liking when you build it yourself from an 80% lower. Finally, building your AR-15 can be a fun and rewarding experience.

Do I need to serialize my 80 lower?

The answer to this question is no, you do not need to serialize your 80 lower. There is no federal law that requires you to do so. However, some states have laws that require you to serialize your lower. Be sure to check your state and local laws before you begin your build.

What states don’t allow 80% lowers?

Some states do not allow 80% lowers, including California, Connecticut, New Jersey, and Rhode Island. It is important to check your local laws and regulations before purchasing or building an 80% lower.

What is missing from an 80 lower?

An 80 lower is missing a fire control group, a pistol grip, and a stock. These parts are essential to the operation of the firearm and must be installed correctly to avoid any malfunctions. The best 80 lower will have all of the necessary parts included in the kit, as well as clear instructions on how to assemble them correctly.
There are many different brands of 80 lowers on the market, so it is important to do your research before making a purchase. We have put together a list of the best 80 percent lowers, as well as a buyer’s guide to help you make the best decision for your needs.

Can you gift a completed 80 lower?

Yes, you can gift a completed 80 lower. If the person you are gifting it to is not a prohibited person, then there is no issue. If they are a prohibited person, then it is illegal to transfer the 80 lower to them.

Can you build an AR pistol with an 80 lower?

Yes, it is possible to build an AR pistol with an 80% lower. There are a few things you will need to keep in mind when doing so, however. For starters, you will need to make sure that the 80 lower you select is specifically labeled as a pistol receiver. You will also need to follow all of the same regulations and laws that apply to building a pistol from scratch. This means you will need to have a barrel that is shorter than 16 inches, and you will also need to install a pistol buffer tube rather than a standard rifle buffer tube. Other than those two key differences, the process of building an AR pistol from an 80 lower is the same as building a rifle.

Conclusion

When it comes to 80% lowers, there are a lot of things to consider. We’ve tried to answer some of the most common questions in this buyer’s guide, but if you still have unanswered questions, don’t hesitate to reach out to us or one of our trusted partners. We hope that after reading this article, you feel more confident in your decision to purchase an 80% lower.

About the author

AmmoFire Team

AmmoFire - Ammo Review Team

0 0 votes
Article Rating
Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments
0
Would love your thoughts, please comment.x
()
x