Demystifying AR15 Parts: A Deep Dive into Your Rifle's Components
So, you've got your hands on an AR15, and you're curious about what makes it tick. You're in luck. We're peeling back the layers to help you understand the bits and bobs that make up this iconic firearm. Read more now on ar15parts.com/

Let's be clear: this isn't rocket-science, but it may feel like a puzzle to a newbie. Once you become familiar with AR15 Parts it will be just like playing your favorite videogame.
The upper receiver: the Brain Box
Start with the upper receiver. Think of this as the brain box of your rifle. This is where the action happens--literally. The barrel, the bolt carrier group (BCG), as well as the charging handle are all housed in this compartment. The barrel is where the bullets leave. The BCG? It's like the engine, cycling the rounds. The charging handle is it? Well, it's akin to pulling the string on a lawnmower to get things started.
The Lower Receiver: the Heart of the Matter
Let's talk about the lower receiver. It's not as glamorous, but this is the heart of your AR15. It's where the trigger, magazine well, and buttstock live. The trigger is your direct connect to the action. Pop in a fresh mag in the magazine well, and you're good to go. Buttstock? This is where the gun rests on your shoulder, giving you stability.
Handguards and Rail Systems on the Swiss Army Knife
Ever heard of a handguard? It's a Swiss Army Knife attached to the barrel. It offers a place to mount accessories and protects you from the heat of the barrel. Picatinny rails, M-Lok rails, or KeyMod Rails? Yeah, those are just fancy terms for different mounting systems for lights, lasers, and grips.
The Middleman in the Gas System
Gas is also used in your rifle to fire the bullet. Gases are released when you fire the gun, and they also cycle the BCG. This is like killing two birds at once: the bullet moves and the gun is ready for the next shot.
Look, we're not talking ultra-obsessive cleaning routines, but you do need to keep your AR15 in good shape. It's like driving a car that has mud on the windshield. Keep it lubed and free of gunk, and it'll treat you well.