The LBE AR-15 Pistol Buffer Tube (brand part no. PBT-BLK) is machined with no provision to mount a buttstock, keeping an AR pistol build legally compliant while still giving the receiver extension the shooter needs to cycle reliably. A foam end cap covers the tail of the tube, giving the shooter a more comfortable cheek weld against a brace or bare tube during use. LBE Unlimited, a US manufacturer of gun parts and accessories, pre-threads this tube so it installs easily onto any standard-pattern AR-15 lower receiver. Whether it’s going into a fresh pistol build or replacing a damaged or spare unit, this buffer tube drops in without any fitting work.

Key Specifications

• Machined with no buttstock mounting provision to keep pistol builds compliant.
• Includes a foam end cap over the tail of the tube for a more comfortable cheek weld.
• Finished in black to match standard AR-15 furniture.
• Pre-threaded to install on any standard-pattern AR-15 lower receiver.
• Made by LBE Unlimited, a US manufacturer of AR-15 parts.

Frequently Asked Questions

Can I mount a stock on this buffer tube? No, it is machined without a stock mounting provision specifically to keep pistol builds legally compliant.

Does it fit a standard AR-15 lower? Yes, it is pre-threaded to install on any standard-pattern AR-15 lower receiver.

What is the foam cap for? It covers the tail of the tube to give a more comfortable cheek weld during use.

Buy the LBE AR-15 Pistol Buffer Tube, Black

Keep your AR pistol build compliant and functional with a purpose-built receiver extension. See more LBE Unlimited parts in our AR buffer system selection. Order it from our Lubbock, Texas gun shop for fast, direct shipping.