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80 Lower Blog

AR-15 Finishes & Coatings Explained

AR-15 Finishes & Coatings Explained

Posted by 80-Lower.com on Nov 20th 2020

Black rifles deserve the name: They're almost all, well, black. Other parts ( like our raw 80% lowers) come unfinished so you can add your own coating. Even though they all look alike, there are loads of finishes available for your AR-15 and other guns. Which ones can you apply at home, and how …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


5.56 NATO vs .223 Remington vs .223 Wylde

5.56 NATO vs .223 Remington vs .223 Wylde

Posted by 80-Lower.com on Nov 17th 2020

There's one question every new AR owner asks when they buy those first boxes of ammo: Can you shoot 5.56 NATO in a .223 Remington gun? What is .223 Wylde, anyway? How does it all compare? We're explaining everything about the AR-15's most popular cartridges. Let's go. .223 Remington Came Fi …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


AR-10 vs AR-15: History, Compatibility & Specs

AR-10 vs AR-15: History, Compatibility & Specs

Posted by 80-Lower.com on Oct 26th 2020

The AR-15 and AR-10 look identical in their designs, handling, and functions. They even look the same at a glance: Can't tell the difference? You're forgiven. The AR-15 and the AR-10 are  almost the same rifle. They both use a direct-impingement gas system. Both have double-stacked bo …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


The Guide to The 6.5 Grendel AR

The Guide to The 6.5 Grendel AR

Posted by 80-Lower.com on Aug 10th 2020

300 Blackout, 458 SOCOM, .308, 6.5 Creedmoor, 9mm, the list goes on. There are endless calibers being shoved into the AR platform for a myriad of uses. But why 6.5 Grendel? What's its purpose, and why bother chambering your black rifle in it? Today we're covering this cartridge, why you might wan …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


AR Lower Receivers: Cast vs Billet (6061-T6) vs Forged (7075-T6) Aluminum

AR Lower Receivers: Cast vs Billet (6061-T6) vs Forged (7075-T6) Aluminum

Posted by 80-Lower.com on Jul 30th 2020

The most important part of the AR-15, the lower receiver (the firearm itself) is most often made from two types of metal alloys: Billet (6061-T6) and forged (7075-T6) aluminum. If you're here, you're probably going to build your AR-15 using an 80% lower. If that's the case, choosing between bille …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


How to Serialize & Build an 80% Lower in California

How to Serialize & Build an 80% Lower in California

Posted by 80-Lower.com on Jun 25th 2020

California's gun laws are an infuriatingly confusing and complex minefield, aren't they? Let's walk you through navigating that mine field, so you can legally build your own 80% lower for your AR-15. Now, this article won't dive into the nuances of what makes an AR 15 (regardless of caliber) l …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.