What is a buffer tube?

A buffer tube is a crucial component of an AR-15 rifle or similar firearms. It is located in the rear of the receiver and houses the recoil spring and buffer assembly. The buffer tube helps to control the cycling of the rifle by absorbing the force of the recoiling bolt carrier group.

Buffer tubes come in various lengths, typically categorized as rifle-length, carbine-length, and pistol-length. The choice of buffer tube length depends on the specific firearm configuration and personal preference.

Buffer tubes are usually made from high-strength materials such as aluminum or stainless steel to withstand the high levels of stress and pressure experienced during shooting. They often have a threaded end to attach the stock or buffer tube cap securely.

Buffer tubes are an essential part of a firearm's operation, helping to ensure smooth and reliable cycling of the bolt carrier group.