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Ar 15 Complete Upper: A Comprehensive Guide
When it comes to building your own firearm, the AR-15 complete upper is a crucial component. This guide will delve into the various aspects of the AR-15 upper receiver, helping you make informed decisions for your custom rifle.
Understanding the AR-15 Upper Receiver
The AR-15 upper receiver is the part of the rifle that houses the barrel, bolt carrier group, and the action. It is the part that is often customized and modified the most. Here’s a breakdown of its key components:
| Component | Description |
|---|---|
| Barrel | The barrel is the tube through which the bullet travels. It determines the rifle’s caliber and barrel length. |
| Bolt Carrier Group | The bolt carrier group is responsible for cycling the action of the rifle, including feeding, extracting, and ejection of rounds. |
| Gas System | The gas system regulates the amount of gas that is bled from the barrel to cycle the action. It comes in various lengths and types, such as carbine, mid-length, and full-length. |
Now that we have a basic understanding of the AR-15 upper receiver, let’s dive into the different types of complete uppers available on the market.
Types of AR-15 Complete Uppers
There are several types of AR-15 complete uppers to choose from, each with its own set of features and benefits. Here are some of the most popular options:
Standard Upper Receiver
The standard upper receiver is the most common type and is compatible with most accessories and parts. It typically features a mil-spec gas block and comes in various calibers, such as 5.56mm and .223 Remington.
Handguard
The handguard is the tube that runs along the barrel and provides a place to grip the rifle. There are many different handguard options, including collapsible, fixed, and free-float designs. The choice of handguard will depend on your intended use and personal preference.
Barrel
The barrel is one of the most critical components of the AR-15 upper receiver. It determines the rifle’s caliber, barrel length, and twist rate. Popular barrel lengths include 16″, 18″, and 20″, with 16″ being the most common for carbine-length rifles.
Bolt Carrier Group
The bolt carrier group is responsible for cycling the action of the rifle. There are several types of bolt carrier groups, including mil-spec, commercial, and lightweight options. The choice of bolt carrier group will depend on your desired weight and performance.
Customizing Your AR-15 Complete Upper
Once you have selected the type of AR-15 complete upper you want, it’s time to customize it to fit your needs. Here are some popular modifications and upgrades:
Barrel Length and Twist Rate
Changing the barrel length and twist rate can significantly impact the performance of your rifle. A longer barrel will typically provide better accuracy and velocity, while a different twist rate can help stabilize bullets of different weights.
Handguard
Upgrading to a different handguard can improve ergonomics, cooling, and compatibility with accessories. Consider factors such as material, design, and weight when choosing a new handguard.
Bolt Carrier Group
Upgrading to a lightweight bolt carrier group can reduce the overall weight of your rifle, making it more maneuverable and easier to control. Additionally, some bolt carrier groups offer enhanced performance and durability.
Gas System
Adjusting the gas system can help optimize your rifle’s performance in various conditions. Consider the length and type of gas system that best suits your intended use, such as a carbine-length gas system for close-quarters combat or a full-length gas system for long-range shooting.
Conclusion
Building your own AR-15 complete upper can be a rewarding and enjoyable experience. By understanding the different components and customization options, you can create a rifle that meets your specific needs and preferences. Remember to research and source high-quality parts to ensure the longevity and reliability of your custom firearm.
