Building your own AR-15 remains one of the most popular DIY firearm projects in the United States. Whether you're seeking full customization, better value than a complete rifle, or the satisfaction of hands-on assembly, a home-built AR-15 offers excellent performance and flexibility. This comprehensive guide covers everything for a successful, legal DIY AR-15 build—from parts selection to final assembly and safety tips. Important Disclaimer: Firearm laws change. Building an AR-15 for perso …

Before you start scrubbing, it helps to understand what you're working with. The bolt carrier group consists of several discrete parts, each with a specific job and specific failure modes. Bolt Carrier The outer body that houses the bolt and rides inside the upper receiver. During cycling, expanding gas enters the gas key and drives the carrier rearward. The carrier key (also called the gas key) must be properly staked to prevent gas leaks. The inside of the carrier, especially the firing pin c …

Calling a rifle a "value" means more than just a low price. It means you're getting maximum performance, reliability, and build quality per dollar spent. The best value AR-15 brands tend to share a few traits: They use mil-spec or better components — properly staked castle nuts, correctly installed gas keys with proper torque and staking, barrels with the right chrome-lining or nitride treatment. They offer a warranty that actually means something. And they're backed by a reputation in rea …