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How to Install the AR-15 Lower Parts Kit

Posted by 80-lower on Feb 17th 2020

How to Install the AR-15 Lower Parts Kit
Installing the lower parts kit in your AR-15's lower receiver should take less than two hours for first-time builders. This guide will illustrate how to perform each assembly and install step with … read more

Builder's Guide to the AR-10 & LR-308

Posted by 80-Lower on Feb 5th 2020

Builder's Guide to the AR-10 & LR-308
Building an AR chambered in .308 is wildly popular, especially with the introduction of ready-to-fire uppers,  80% lowers chambered in .308, and complete build kits. But the original AR … read more

Builder's Guide to AR-15 Upper Receivers

Posted by 80-Lower on Jan 14th 2020

Builder's Guide to AR-15 Upper Receivers
( This guide is part of our Master Guide to AR-15 Parts) The AR-15 platform's lower receiver is relatively standardized. Opportunity to customize your build truly begins with the stripped upper … read more

Builder's Guide to AR-15 80% Jigs

Posted by 80-lower on Jan 2nd 2020

Builder's Guide to AR-15 80% Jigs
If you're ready to build your first AR-15 from scratch, you'll first want to  understand the concept of the 80% lower receiver. If you're already "in the know" and want to start building, th … read more

Builder's Guide to AR-15 Buffers & Weights

Posted by 80-Lower on Dec 19th 2019

Builder's Guide to AR-15 Buffers & Weights
Like the gas system, the AR-15's buffers play an important role in controlling recoil and, more importantly, assisting the bolt carrier group's travel so it can reliably cycle whatever ammunition y … read more