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AR 15 Barrel Length Guide

Posted by Modulus Arms on 7th Mar 2022

AR 15 Barrel Length Guide

As far as AR15 components go, your barrel length holds one of the most critical roles in an AR platform. The barrel length directly affects your ballistic coefficient and it’s important to consider …

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Why Buy A Raw 80% Lower?

Posted by Modulus Arms on 27th Nov 2021

Why Buy A Raw 80% Lower?

A raw 80 percent lower is exactly what it sounds like - an 80 lower that has not had any treatment for its surface’s finish which means you get a lower receiver without any color or coating, just b …

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80 Lower: Forged vs Billet

Posted by Modulus Arms on 19th Nov 2021

80 Lower: Forged vs Billet

The AR’s receiver design is simple enough that given the time and effort, one can even make a stripped lower receiver out of aluminum cans. AR lower receivers and 80 lowers available on the market …

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Best AR10 Lower

Posted by Modulus Arms on 1st Nov 2021

Best AR10 Lower

While having a 300 BLK build can mean simply having a dedicated 300 BLK upper receiver and a normal AR15 lower borrowed from a previous gun, having a 308 AR means you have to do an entirely new bui …

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300 Blackout Complete Guide

Posted by Modulus Arms on 18th Oct 2021

300 Blackout Complete Guide

5.56 has served as the standard small rifle caliber for the US Armed Forces since around the same time as modern BDUs were beginning to be worn. As Crye Precision came to fulfill the specialty dema …

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