Are you looking for the best AR-10 80% lower? If you are, youโve come to the right place. In fact, weโll be looking at a couple of these in a brief moment. But first, weโll be talking about what these are and what their intended purpose is.
Weโll also give you a brief guide on how you can choose a great 80% lower for your rifle without having to wade through the low-quality, cheap lowers that tend to flood the market these days.
Also, if you might have concerns as to whether or not an 80% lower is legal in your area or not, stick around. Weโll answer that question so you wonโt have to spend more time researching for an answer.
Comparison Chart of the Best AR-10 80% Lowers
| IMAGE | PRODUCT | |
|---|---|---|
Our Top Pick  |
| View Latest Price โ |
Best Budget Option  |
| View Latest Price โ |
What is an 80% Lower?
An 80% lower is a slang term for a type of lower receiver. Contrary to popular belief, itโs not something that was made up by government agencies like the ATF. Like the name, this lower receiver covers up 80 percent of the lower half of your AR-10 rifle. Despite some saying that itโs considered a firearm, a stand-alone 80% lower is not one.
For further confirmation, the ATF even states that these lowers are not firearms. Thatโs because in order to complete the receiver, it would require some tooling or gunsmithing skills. Keep in mind that in most jurisdictions, it is legal to manufacture your own gun. But to err on the side of legality, double check your local, state, and federal laws just to make sure.
James Madison Tactical - 308 80% Lower Receiver W/Jig
Is it Legal to Own an 80% Lower?
Short answer: Yes. The long answer is a repeat of what was just mentioned. Itโs not considered to be a stand-alone firearm. Unlike a complete lower receiver for an AR-10, you wonโt need an FFL license to purchase or own one. In most, if not all jurisdictions, you will be allowed to own one of these lowers.
Why Would You Want an 80% Lower Compared to Others?
There are a few good reasons you should own an 80% lower receiver for your AR-10. Some of them may be for the sake of your rifleโs overall function. But there are also some advantages you may also enjoy should you own one of these yourself. Here is a brief list of what youโll enjoy if you choose to upgrade to an 80% lower:
Your Right to Bear Arms
Itโs clearly obvious. You, as an American citizen, have the right to bear arms, provided that you are not a convicted felon or have any blemishes on your record that would otherwise cause issues when youโre attempting to purchase a firearm. Whether 2A opponents like it or not, this is a right that most Americans have exercised responsibly and safely. And they should not be lumped in with those who have made the mistake of using a firearm irresponsibly.
They Donโt Have Serial Numbers
The good news is that 80% lowers donโt have serial numbers. In other words, you wonโt be tracked down on any government database. So as long as youโre using them responsibly, you wonโt have to worry about breaking any laws or regulations. Especially if youโre building an AR-10 rifle from scratch.
Complete Lower Receivers Will Require FFLs
If youโre getting a complete lower receiver, then youโll need an FFL. And in some jurisdictions, it may not even be legal to purchase or even own these kinds of receivers. With 80% lowers, you wonโt have to jump through the legal hoops and deal with the headaches that go along with it.
Aspects to Consider Before Buying
Before purchasing an 80% lower receiver of your own, youโll need to consider some factors that will play a role in your final buying decision. It would be wise to look carefully at your options rather than buy the first 80% lower you find on the market. If youโre online, itโs better to do some in-depth research before you hit the โadd to cartโ button. With that said, here are a few aspects that some past buyers have considered prior to their purchase:
Price
Price is considered a major factor, especially for those looking for an 80 percent lower on a budget. While price should not be the โbe all, end allโ in your purchasing process, you should also consider overall quality as a possible factor. As a rule of thumb, find something thatโs affordable in price but also high in overall quality.
Material
Staying on the topic of quality, itโs important to know what kind of materials are being used to manufacture these lowers. Most gun manufacturers opt for high-quality materials. For example, polymer is considered a heavy favorite among manufacturers. Upper and lower receivers will typically be made from this kind of material since itโs a lot stronger and more resistant to damage. Another material that might be included for 80 percent receivers is aluminum.
Installation
Already, you know that 80 percent lowers will need some tooling in order to be installed properly. The same way is true when youโre looking to complete the last 20% of a lower receiver. Keep in mind that some gunsmithing skills may be needed in order to install an 80% lower receiver. If the installation process appears a little too intimidating for you, you can always rely on the professional services of a gunsmith to install it for you.
Review of the Best AR-10 80% Lowers
Below, weโll be taking a look at two of the best AR-10 80% lowers considered the best on the market. We chose these two since they stood out as the best in terms of quality and performance. At the same time, these will fit most budgets. Regardless of which one you choose, your final decision may come down to a unique feature or two that might pique your interest a little further. With that said, letโs introduce our best overall choice:
Best Overall:
James Madison Tactical - 308 80% Lower Receiver W/Jig
Pros
Cons
For our top choice, weโll be taking a look at the James Madison Tactical 80% lower receiver. One thing youโll notice is that this is constructed from a high-quality polymer. This is guaranteed to hold its own, especially when youโve fired off well over a hundred rounds.
This is a fully engineered lower designed to give you long-lasting and reliable performance that is second-to-none. The polymer is quite strong and most of its strong points are located in key areas. This receiver will also be resistant to not just damage, but also corrosion as well.
Something to keep in mind, polymer is more resistant to corrosion than aluminum lower receivers. So if youโre looking for something that will be strong and long-lasting, this 80% lower could be your best choice.
These are engineered for the purpose of providing mil-spec style tolerances. So if youโre looking for something thatโs close to mil-spec, youโre probably going to want this product for your own rifle.
Bottom Line
The James Madison Tactical 80% lower receiver is easy to fit and install if you know what youโre doing. Especially when youโll be using tools like a drill press or any other machines that may be useful for the installation process. The manufacturers were smart in choosing polymer as the material to use for this lower receiver.
You can easily make some changes if need be and polymer wonโt give you much difficulty. If you have some gunsmithing skills handy and know your way around the machines, the installation process wonโt be as challenging for you.
Runner-up:
JMT .308/7.62 80% Polymer Lower Receiver & Jig
Pros
Cons
Finally, weโll be taking a look at the runner up on our list. This is also brought to us by the JMT brand (the short name for James Madison Tactical). This lower receiver is available in three different colors. So if you have a personal preference for a certain color, just choose one and go with it.
This is made from high-quality polymer that comes with a webbed magazine well located on both the right and left sides. Your AR-10 magazines should be able to fit in this lower receiver properly without any jamming issues.
Believe it or not, this is actually a lower receiver that is interchangeable. This can be interchangeable with most mil-spec .308 caliber rifles. If youโre looking for a lower receiver that wonโt be difficult when switching to other rifles, then this might be your best option.
This is built to last and also built to withstand the harshest of environments. If youโre looking for something that will stick with you in the long run, youโd be crazy to pass up on this version.
Bottom Line
This 80 percent lower is a lightweight, but a durable unit that will work with your AR-10 without issue once youโre able to properly get it installed. If youโre looking for something that will be easy to machine, but a little less complicated than any of the other products, this JMT model might the better option for you.
This will fit quite well if you happen to have a JMT upper lurking around. As a rule, if youโre looking for an upper that will be perfect to pair with this lower, then your best bet will obviously be an upper from the same manufacturer.
Conclusion
Finding the best AR-10 80% lower may be a challenge. But one of these two might be yours if youโre looking for an excellent addition to your AR-10 building project. These are legal to own and will also give you more peace of mind as opposed to jumping through all kinds of hoops with complete lower receivers.
Whether youโre using it for a building project or as a replacement, a good 80% receiver might be just what you need to maximize your AR-10 rifleโs performance.
