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80 Lower Blog

P80 vs GLOCK Frames: What's Different?

P80 vs GLOCK Frames: What's Different?

Posted by 80-Lower.com on Mar 24th 2023

Polymer80's frames -- and the handguns that are built on those frames -- have gained popularity among mainstream firearm owners. These frames and guns easy to customize, and they use GLOCK parts. But P80-based pistols are not identical to modern, Gen 5 GLOCK pistols. That's because they use "G …

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 an 80% Lower

How to Serialize an 80% Lower

Posted by 80-Lower.com on Feb 22nd 2023

Under federal law, it's legal to make a firearm at home, for personal use, without a license. Most choose to build a firearm using an 80% lower: An un-serialized, unfinished firearm receiver. We're often asked if you have to put a serial number on your finished firearm. Let's cover whether tha …

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 a P80 Pistol

How to Serialize a P80 Pistol

Posted by 80-Lower.com on Feb 17th 2023

When you fabricate a P80 frame, you're legally creating a firearm under federal law. Building a firearm at home, for personal use, is perfectly legal to do, and you don't need a Federal Firearm License to do it. In some cases, you may need to serialize your homemade firearm -- especially if you live …

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 Install a Drop-in Trigger

How to Install a Drop-in Trigger

Posted by 80-Lower.com on Feb 14th 2023

You've finished putting together your 80% lower or stripped AR lower. You sent some rounds downrange, and you're happy with the performance -- mostly. Maybe that stock trigger isn't as crisp as you'd like. A decent trigger can make a big difference in your ability to land tight shot groups.  …

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% Frame Compatibility Guide

80% Frame Compatibility Guide

Posted by 80-Lower.com on Nov 17th 2022

The GLOCK® and 1911 handguns are perhaps two of the most popular firearms in America. It's no surprise 80% frames have been made for custom builds. This guide compares frame blank compatibility with handgun models, calibers, and parts. All P80 Frames Are "Gen 3" The Polymer80 line of frame …

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% Lower Compatibility Guide

80% Lower Compatibility Guide

Posted by 80-Lower.com on Nov 17th 2022

You're ready to become an at-home gunsmith and build an AR-15 from scratch. But which receiver blank should you buy?  This guide compares available AR-type 80% lowers, which calibers they work with, and other specifications you'll need to know before building. New here? Read "What is An …

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.