AR-10 Lower Receiver Dimensions: A Comprehensive Guide
When it comes to building your own firearm, understanding the dimensions of the AR-10 lower receiver is crucial. This component is the foundation of your rifle, and its accuracy and fit can greatly impact the performance of your firearm. In this article, we will delve into the various dimensions of the AR-10 lower receiver, providing you with a detailed and informative guide.
Length
The overall length of an AR-10 lower receiver typically ranges from 7.25 inches to 7.5 inches. This measurement is taken from the front of the trigger guard to the back of the receiver. It’s important to note that the length can vary slightly depending on the manufacturer and specific model.
Width
The width of the AR-10 lower receiver is generally around 1.5 inches. This measurement is taken at the widest point of the receiver, which is usually at the magazine well area. The width is an important factor to consider when selecting accessories and fitting them to your lower receiver.
Height
The height of the AR-10 lower receiver varies depending on the model and manufacturer. Most receivers have a height of approximately 1.75 inches to 2 inches. This measurement is taken from the bottom of the receiver to the top of the receiver, including any mounting surfaces or features such as the magazine well.
Weight
The weight of an AR-10 lower receiver can vary, but it typically ranges from 1.5 pounds to 2 pounds. This weight includes the receiver itself, as well as any integrated features such as a trigger guard or magazine well. It’s important to consider the weight of the lower receiver when building your rifle, as it can affect the overall balance and handling of the firearm.
Material
The AR-10 lower receiver is typically made from aluminum, specifically 7075-T6 aluminum alloy. This material is chosen for its strength, durability, and lightweight properties. The aluminum receiver is also corrosion-resistant, making it a suitable choice for both recreational and competitive shooting applications.
Receiver Holes
The AR-10 lower receiver features several holes that are essential for the assembly and operation of the firearm. These include:
| Function | Number of Holes |
|---|---|
| Trigger Mounting | 2 |
| Magazine Release Mounting | 1 |
| Fire Control Group Mounting | 2 |
| Handguard Mounting | 2 |
| Receiver Extension Mounting | 2 |
Receiver Extension
The receiver extension, also known as the buffer tube, is an important component of the AR-10 lower receiver. It provides a mounting point for the buffer and spring, which in turn supports the action of the firearm. The receiver extension typically has a diameter of 1.18 inches and is available in various lengths, such as 6 inches, 6.5 inches, and 7 inches.
Magazine Well
The magazine well of the AR-10 lower receiver is designed to accommodate standard AR-10 magazines. The width of the magazine well is typically around 1.5 inches, and it features a slight bevel to facilitate magazine insertion and removal. Some receivers may also have features such as a magazine release button or a magazine catch, which can affect the overall design and functionality of the magazine well.
Trigger Guard
The trigger guard of the AR-10 lower receiver is designed to protect the trigger and other components from damage. It also provides a secure grip for the shooter’s hand. The trigger guard is typically made from the same material as the receiver and can be found in various designs, such as a standard trigger guard or a folding trigger guard for concealed carry applications.
Conclusion
Understanding the dimensions of the AR-10 lower receiver is essential for building a reliable and accurate firearm. By familiarizing yourself with the length, width, height, weight, material, and various features of the receiver, you can make informed decisions when selecting accessories and assembling your rifle.
