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80 Lower Blog

The 5.56 NATO Ammo Guide (X/M855 vs. X/M193)

The 5.56 NATO Ammo Guide (X/M855 vs. X/M193)

Posted by 80-Lower.com on Sep 18th 2019

M855. SS109. XM193... "Green" tips? What does it all mean?! In this guide, we're breaking down  everything you want to know about good ole' 5.56 NATO, the round most used by the military and the AR-15 market. Let's figure out what all these different 5.56 rounds do, what their names me …

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.


Can you shoulder an AR-15 pistol?

Can you shoulder an AR-15 pistol?

Posted by 80-Lower.com on Jul 1st 2019

Updated January 2022: AR-15 pistols were at first seen as gimmicks, range toys meant for fun and little else. Then the pistol brace came along thanks to one Marine/U.S Army veteran, and everything changed. Now, most AR pistols offer the capability and cool points that you'd normally find in a shor …

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 4 Best 1911 Upgrades After You Finish Your Build

The 4 Best 1911 Upgrades After You Finish Your Build

Posted by 80-Lower.com on Dec 20th 2018

So you’ve finished your 1911 build kit – congratulations! You’re now the proud owner of one of the greatest handguns ever built, even to this day. But we at 80-lower are believers in continuous improvement, and the ages-old design of the 1911 could always use some upgrades here and there if it wants …

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 Properly Zero an AR 15

Posted by 80-Lower.com on Nov 2nd 2017

This writer has been in the armed forces for quite some time. During his tenure as an NCOIC, he ran more than a few zero and qualification ranges. He continues to witness trained soldiers and civilian “cool guys” alike cock up their AR 15 zero. So let’s clear the air, here. Today we’re going to teac …

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-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.


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.