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80 Lower Blog

300 Blackout vs. 5.56/.223 vs. 308 Win

300 Blackout vs. 5.56/.223 vs. 308 Win

Posted by 80-Lower.com on Oct 27th 2019

You want to build a black rifle, but you're not sure which caliber to go with. Maybe you just want to know the differences between the three most popular calibers the AR-15 can easily chamber: 300 Blackout, 5.56 NATO or .223 Remington, and .308 Winchester (technically called an "AR-10" or "AR-308 …

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.


300 Blackout vs. Body Armor and Bulletproof Glass

Posted by 80-Lower.com on Oct 24th 2019

Every time a new “gee whizz” rifle cartridge comes out, the curiosities about it can do begin to mount. One of the template questions is, “can it penetrate body armor”? While this curiosity is a novelty for most, 300 BLK serves its purpose among military folks and operators, so it’s worthy of analys …

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 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.


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.