AR-15 Everything except the Lower Receiver: A Comprehensive Guide
When it comes to the AR-15, the lower receiver is often the most discussed and debated component. However, there’s much more to this versatile firearm than just the lower receiver. In this article, we’ll delve into the various aspects of the AR-15, providing you with a detailed and multi-dimensional overview. Whether you’re a seasoned shooter or a beginner, this guide will help you understand the different components and their functions.
Understanding the AR-15
The AR-15 is a semi-automatic, gas-operated firearm that has gained immense popularity among shooters worldwide. It’s known for its lightweight, accuracy, and customizable features. While the lower receiver is the heart of the firearm, there are several other components that play crucial roles in its performance.
The Upper Receiver
The upper receiver is the part of the AR-15 that houses the barrel, bolt carrier group, and the upper receiver extension. It’s the component that determines the caliber of the firearm. Here are some key points to consider:
- Caliber: The upper receiver is designed to accommodate specific calibers, such as .223 Remington, 5.56 NATO, and .308 Winchester. Ensure that you choose the right upper receiver for your desired caliber.
- Barrel: The barrel is the longest part of the upper receiver and is responsible for directing the bullet down the barrel. It’s crucial to select a barrel with the appropriate length and twist rate for your ammunition.
- Bolt Carrier Group: The bolt carrier group is the heart of the gas system and is responsible for cycling the firearm. It’s essential to choose a high-quality bolt carrier group for reliable performance.
The Lower Receiver
The lower receiver is the part of the AR-15 that houses the trigger group, magazine well, and the fire control group. It’s the component that determines the firearm’s legal status and is often the most regulated. Here are some key points to consider:
- Material: Lower receivers are typically made from aluminum or polymer. Aluminum receivers are known for their durability and strength, while polymer receivers are lightweight and offer better heat dissipation.
- Fire Control Group: The fire control group includes the trigger, hammer, and sear. It’s essential to choose a high-quality fire control group for smooth operation and reliability.
- Magazine Well: The magazine well is the part of the lower receiver that holds the magazine. It’s crucial to select a magazine well that is compatible with your desired magazine type.
The Gas System
The gas system is responsible for cycling the firearm by directing gas from the barrel to the bolt carrier group. Here are some key points to consider:
- Gas Block: The gas block is the part of the gas system that directs gas into the gas tube. It’s essential to choose a gas block that is compatible with your barrel and gas tube.
- Gas Tube: The gas tube is the part of the gas system that carries the gas from the gas block to the bolt carrier group. It’s crucial to select a gas tube that is the correct length for your firearm.
- Gas Key: The gas key is the part of the bolt carrier group that seals the gas port. It’s essential to ensure that the gas key is properly torqued and fits snugly in the gas port.
The Stock and Handguard
The stock and handguard are the components that provide support and stability to the firearm. Here are some key points to consider:
- Stock: The stock is the part of the firearm that is held against the shoulder. It’s essential to choose a stock that is comfortable and provides adequate support for your shooting style.
- Handguard: The handguard is the part of the firearm that covers the barrel and provides a gripping surface. It’s crucial to select a handguard that is compatible with your barrel and offers adequate protection.
The Accessories
Accessories can greatly enhance the performance and functionality of your AR-15. Here are some popular accessories
