Buffer tubes might seem like a small component in your firearm, but they play a pivotal role in managing recoil and providing a solid foundation for your stock or brace. In this comprehensive guide to buffer tubes, we'll explore their various types, materials, and why selecting the right one matters for your firearm.
A buffer tube, also referred to as a receiver extension, is a cylindrical component that attaches to the lower receiver of AR-15 and AR-10 rifles. Its primary function is to house the buffer and recoil spring, which are vital for managing the firearm's recoil.
Buffer tubes come in several distinct types, each designed to meet specific needs and preferences:
Mil-spec (military specification) buffer tubes adhere to strict standards, ensuring compatibility with a wide range of stocks and accessories. They are a popular choice among firearm enthusiasts due to their versatility.
Commercial buffer tubes may look similar to mil-spec tubes but have slightly different dimensions. They are often used with commercial stocks and may not be as interchangeable with mil-spec components.
Pistol buffer tubes are notably shorter than traditional rifle buffer tubes and are commonly used on AR pistols or shorter-barreled rifles.
A1 and A2 buffer tubes are found on older AR-15 models. The A1 tube is shorter, while the A2 tube is longer and typically features a fixed stock.
Buffer tubes are typically constructed from one of two materials:
Aluminum buffer tubes are lightweight, durable, and corrosion-resistant. They are the preferred choice for many AR-15 and AR-10 builds, offering a balance between strength and weight.
Polymer buffer tubes are even lighter than their aluminum counterparts but may sacrifice some durability. They are often used to reduce overall firearm weight, making them suitable for lightweight builds.
Buffer tubes serve several critical functions in your firearm:
When you fire your rifle, the bolt carrier group moves rearward, compressing the recoil spring housed within the buffer tube. This compression absorbs and controls the recoil generated by the firing process, enhancing your ability to stay on target.
Buffer tubes provide the attachment point for your rifle's stock or brace. Your choice of buffer tube dictates the type of stock or brace you can use, allowing you to customize your firearm for optimal comfort and control.
Many buffer tubes are designed to allow for adjustable length-of-pull (LOP). This customization is crucial for achieving a comfortable and ergonomic shooting position, especially when using optics or other accessories.
Selecting the right buffer tube ensures compatibility with your chosen stock, brace, and other firearm components. This compatibility is essential for building a reliable and functional firearm that suits your needs.
When selecting a buffer tube for your firearm, consider the following factors:
Determine whether you are building a rifle, pistol, or another type of firearm. Your choice will dictate the type of buffer tube you need.
Choose a buffer tube that is compatible with your desired stock or brace. Pay attention to mil-spec or commercial specifications, depending on your preference and existing components.
Consider whether you want an adjustable buffer tube to fine-tune the length-of-pull to your liking, especially if you plan to use optics or need a more personalized fit.
Decide whether you prefer an aluminum or polymer buffer tube based on factors like weight, durability, and aesthetics.
Discover a wide range of buffer tubes suitable for various AR-15 and AR-10 builds. Our selection offers options to match your preferences and build requirements. Explore our buffer tubes today to enhance your firearm's performance, comfort, and functionality.
