Which AR-15 Twist Rate is Best?

Posted by 80-Lower.com on Jun 30th 2025

This guide covers all the important aspects of the AR-15 barrel: Rifling, forging, and barrel steel, treatments and coatings, and the best barrel lengths and twist rates for the most popular cartridges. What is a "Twist Rate," Exactly? A barrel's twist rate describes how tightly a gun barrel's rifli …

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 GunBuilders.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.

Which AR-15 Barrel Finish is Best?

Posted by 80-Lower.com on Jun 27th 2025

Whether you build or buy a rifle, picking out a barrel is arguably the most important thing you'll do. After all, the barrel determines how your rifle performs; everything else comes second. In addition to choosing between carbon and stainless steel, and your barrel's type of rifling, you've got to …

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 GunBuilders.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.

Which Type of Barrel Rifling is Best? A Comparison

Posted by 80-Lower.com on Jun 27th 2025

Every shooter wants the most accurate and reliable barrel. If you're building a new AR-15 or just buying a rifle off the shelf, you're probably deciding between different types of rifling: Cold-hammer forged (CHF), cut rifling, and button rifling. Which one's the best? Is one the best? Each type of …

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 GunBuilders.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 Store Magazines Loaded? (Yes, Here's Why)

Posted by 80-Lower.com on Jun 24th 2025

You've heard it before: If you store a fully loaded magazine long-term -- say, six months or longer -- then you might as well throw it away. That magazine's spring is ruined and unreliable, because it wore out. You might've also read that you shouldn't store magazines fully loaded, but that you inst …

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 GunBuilders.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 BLK vs. 5.56 NATO: Which One's Better?

Posted by 80-Lower.com on Jun 16th 2025

300 BLK vs. 5.56 NATO: Which one's better? Is one better? (Yes). Which one should you pick for target shooting, self defense, short-barreled rifles, long-range accuracy? The answers to these questions might surprise you. We're covering ballistic data for both rounds and comparing their performance i …

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 GunBuilders.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 Make Your AR-15 Legal in California

Posted by 80-Lower.com on Jun 2nd 2025

California has some of the strictest gun laws in the country, especially when it comes to the AR-15. The state's legislature has placed many restrictions on how, exactly, an AR-15 can be legally configured. There are numerous parts you can't legally install. But with the right ones, you can still en …

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 GunBuilders.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.