Ar 15 Lower Build Kit: A Comprehensive Guide for Aspiring Gun Enthusiasts
Are you looking to build your own AR-15 lower receiver? If so, you’ve come to the right place. An AR-15 lower build kit is a fantastic way to customize your firearm and save money in the process. In this article, we’ll delve into the various components of an AR-15 lower build kit, their functions, and how to choose the right one for your needs.
Understanding the AR-15 Lower Receiver
The AR-15 lower receiver is the foundation of your firearm. It’s the part that houses the magazine, trigger, and fire control group. When you purchase an AR-15 lower build kit, you’re essentially getting all the components needed to assemble a functional lower receiver.
Here’s a breakdown of the key components you’ll find in an AR-15 lower build kit:
| Component | Description |
|---|---|
| Lower Receiver | The main housing for the trigger, magazine release, and fire control group. |
| Trigger Group | Comprises the trigger, hammer, and safety selector. It’s responsible for the firing mechanism. |
| Magazine Release | Allows you to release and reload the magazine. |
| Fire Control Group | Includes the bolt carrier group, bolt, and gas key. It’s responsible for cycling the firearm’s action. |
Now that you understand the basic components, let’s dive into the details of each one.
Choosing the Right Lower Receiver
The lower receiver is the most crucial component of your AR-15 lower build kit. It’s the part that determines the overall size and weight of your firearm. Here are some factors to consider when selecting a lower receiver:
- Material: Lower receivers are typically made from aluminum or polymer. Aluminum receivers are lighter and more durable, while polymer receivers are more affordable and easier to customize.
- Finish: Anodized receivers offer better corrosion resistance and a sleek appearance. Black oxide or Parkerizing finishes are also popular options.
- Fit: Ensure that the lower receiver fits your firearm’s upper receiver and other components properly.
Trigger Group: The Heart of Your Firearm
The trigger group is responsible for the firing mechanism of your AR-15. A good trigger group can significantly improve your shooting experience. Here are some factors to consider when choosing a trigger group:
- Weight: Trigger pull weight can vary from 3 to 6 pounds. A lighter trigger pull can improve accuracy and speed.
- Break Type: Single-stage and two-stage triggers are available. Single-stage triggers have a consistent pull weight throughout the entire trigger stroke, while two-stage triggers have a lighter initial pull that gradually increases to the break point.
- Material: High-quality trigger groups are typically made from stainless steel or other durable materials.
Magazine Release: Easy Reloads
The magazine release is a simple yet essential component of your AR-15 lower build kit. Here are some factors to consider when choosing a magazine release:
- Material: Magazine releases are typically made from aluminum or polymer. Aluminum releases are more durable, while polymer releases are more affordable.
- Operation: Ensure that the magazine release operates smoothly and consistently.
- Finish: Anodized or black oxide finishes can improve the appearance and corrosion resistance of your magazine release.
Fire Control Group: The Engine of Your Firearm
The fire control group is responsible for cycling the firearm’s action. Here are some factors to consider when choosing a fire control group:
- Bolt Carrier Group: The bolt carrier group is the heart of the fire control group. It’s responsible for moving the bolt and cycling the firearm’s action. Ensure that the bolt carrier group is made from high-quality materials and fits your firearm properly.
