80 Lower Blog

AR-15 Barrel Twist Rates Explained

Posted by 80-Lower.com on Dec 3rd 2020

AR-15 Barrel Twist Rates Explained
Twist rate is one of the most important specs you'll pick out for your new AR-15 or other gun. But picking the perfect rate is always a compromise, especially if you're buying or building an AR-typ … read more

AR-15 Finishes & Coatings Explained

Posted by 80-Lower.com on Nov 20th 2020

AR-15 Finishes & Coatings Explained
Black rifles deserve the name: They're almost all, well, black. Other parts ( like our raw 80% lowers) come unfinished so you can add your own coating. Even though they all look alike, there are … read more

5.56 NATO vs .223 Remington vs .223 Wylde

Posted by 80-Lower.com on Nov 17th 2020

5.56 NATO vs .223 Remington vs .223 Wylde
There's one question every new AR owner asks when they buy those first boxes of ammo: Can you shoot 5.56 NATO in a .223 Remington gun? What is .223 Wylde, anyway? How does it all compare? We're exp … read more

AR-10 vs AR-15: History, Compatibility & Specs

Posted by 80-Lower.com on Oct 26th 2020

AR-10 vs AR-15: History, Compatibility & Specs
The AR-15 and AR-10 look identical in their designs, handling, and functions. They even look the same at a glance: Can't tell the difference? You're forgiven. The AR-15 and the AR-10 are  … read more

The Polymer 80 Frame & Kit Guide

Posted by 80-Lower.com on Oct 15th 2020

The Polymer 80 Frame & Kit Guide
You asked for it, we answered: Polymer 80 Pistol Kits (and other P80 products for AR builds) are available at 80-lower.com! All polymer 80% frames and pistol kits include factory-style (OEM) … read more

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