Real time inventory. No backorders. Ships NEXT business Day!

phone: 888-568-1771

80 Lower Blog

What is an 80% lower?

What is an 80% lower?

Posted by 80-Lower.com on Sep 6th 2022

Building an AR-15 (or any firearm) is an exciting project that new and experienced shooters can take on. If you're looking into building an AR-type rifle or pistol from scratch, you've probably heard of the 80% lower receiver. This unfinished firearm part is the key to fabricating a custom AR or …

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.


Muzzle Brakes vs. Flash Hiders vs. Compensators

Muzzle Brakes vs. Flash Hiders vs. Compensators

Posted by 80-Lower.com on Sep 2nd 2022

Muzzle devices! There are lots of 'em. You've got muzzle brakes, and flash hiders, and compensators, and suppressor. What's the difference between all of these? What's a pinned and welded flash hider? Which device should I get? Let's answer all the questions and compare muzzle brakes vs. flash …

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 P320 Grip & Size Guide

The P320 Grip & Size Guide

Posted by 80-Lower.com on Sep 2nd 2022

If you've read our P320 Build Guide, then you're probably wondering how to easily convert your newly built Sig Sauer pistol between its various sizes, barrel lengths, and calibers. That's accomplished by swapping the P320's fire control unit -- the part legally considered the firearm itself -- in …

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.


80% Lowers & Frames Compared

80% Lowers & Frames Compared

Posted by 80-Lower.com on Sep 2nd 2022

You're ready to become an at-home gunsmith! Fabricating a custom firearm from scratch requires picking up an 80% lower or frame, officially called a "receiver blank". This guide compares available AR-type receiver blanks and 80% frames that you can buy and build.  Types of 80% Lowers (AR P …

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.


Reflex & Red Dot vs. Holographic Optics Explained

Reflex & Red Dot vs. Holographic Optics Explained

Posted by 80-Lower.com on Sep 1st 2022

Red dots, holographics, ACOGs, Aimpoints, what does it all mean?! Today, we're going to clear up the misconceptions and mysteries about red dot optics. Let's clear up what types of red dots there are. Then we'll compare how each type works, and its pros and cons. Lastly, we'll dispel some myths a …

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 AR9 Pistol Guide: How to Build a 9mm AR

The AR9 Pistol Guide: How to Build a 9mm AR

Posted by 80-Lower.com on Sep 1st 2022

This is your ultimate AR9 pistol guide! We’re breaking down everything you need to know to build one yourself: What the AR9 pistol is, what separates it from an AR-15, parts compatibility, 9mm Parabellum's ballistics, buffer weight, barrel length, twist rate, and magazines. All data and …

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.