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80 Lower Blog

AR-15 Sights: Fixed vs. Folding & How to Co-Witness

AR-15 Sights: Fixed vs. Folding & How to Co-Witness

Posted by 80-Lower.com on Aug 28th 2017

The world of AR-15s is flooded with optics and sights. Picking the right setup for your black rifle can get a little confusing. You want a nice red dot or other optic, but you still want the ability to hit targets with a traditional set of irons. In this guide, we're breaking down the differences …

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.


Video: Forged VS Billet 80 Lower Receiver

Video: Forged VS Billet 80 Lower Receiver

Posted by 80-Lower.com on Aug 28th 2017

Still deciding what type of 80 Lower Receiver to buy? There are two popular types of 80 lowers for sale. In this video we explain the differences between billet and forged 80% lowers. Forged and Billet describe the way that the 80 lower is manufactured. In this video we also take a closer look …

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.


Diagram: Billet Vs Forged 80 Lower Receiver

Diagram: Billet Vs Forged 80 Lower Receiver

Posted by 80-Lower.com on Aug 28th 2017

A common question that we get from fellow builders at 80-lower.com is, "Hey man, what's the difference between a billet and forged 80 lower receiver?"  Check out this sweet diagram that we put together to show the differences and explain some of the terms that you may run into when choosin …

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 Complete AR 15 Parts List & AR 15 Build List [Infographic]

The Complete AR 15 Parts List & AR 15 Build List [Infographic]

Posted by 80-Lower.com on Aug 28th 2017

It’s easy to find an AR 15 Parts List breakdown in a list format online, but finding one that had visuals for each AR 15 part was a real challenge. Let’s face it, there are a ton of parts that go into an AR build and it’s easy to forget which goes where and even what the part is called - not everyon …

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.