Carbine buffer tube - Aero Precision Enhanced Carbine Buffer Tube

This carbine tube has a small lip that protrudes so the bottom of the back of the bolt carrier rides on it. When recoiling the bolt carrier slides in the tube without having to try to match the abrupt joint with a standard tube. I feel it greatly increases reliability of the system especially with a AR upper that uses an operating rod system. There is no bolt bounce with this buffer tube. The bolt carrier has nowhere to go but straight back. I have changed over both of my AR's to this buffer tube and feel it greatly increases the reliability of the weapons. One of those things that should have been designed into the weapon from very start.