UTG Pro TLU001 Receiver Extension Tube Mil-Spec AR-15 6 position Black Hardcoat Anodized Aluminum Rifle

The UTG Pro Mil-Spec AR-15 6-Position Receiver Extension Tube is a mil-spec buffer tube built to the exacting standards that serious AR-15 builders and shooters demand. Whether you're assembling a duty rifle, a precision build, or a workhorse carbine, this extension tube gives you the foundation for a solid, repeatable setup. Made from 6061 T6 aircraft-grade aluminum with a hard-anodized finish, it's engineered for longevity and reliability in the field or at the range.

UTG Pro designed this tube to mil-spec diameter, ensuring tight tolerance control and a secure fit with standard mil-spec stocks and buffer components. That precision fit matters: a sloppy receiver extension can introduce play in your buttstock and degrade accuracy and handling. The black hardcoat anodized finish protects against corrosion and wear while maintaining a professional appearance. Manufactured in the USA, this is a no-compromise part that won't let you down on a build that has to work.

The six-position design gives you adjustability to dial in length of pull for your frame and shooting style, or to accommodate body armor and gear. It's the kind of foundational component that gets spec'd into quality AR builds because it does its job reliably and doesn't quit.

Key Features

• Mil-spec diameter for secure fit with standard AR-15 components
• 6061 T6 aircraft-grade aluminum construction for durability and lightweight strength
• Hard-anodized black finish resists corrosion and wear
• Six-position adjustment for length of pull customization
• Tight tolerance control and precise fitment
• Made in the USA

Specifications

Frequently Asked Questions

Is this UTG Pro receiver extension tube compatible with standard AR-15 stocks?

Yes. This tube is manufactured to mil-spec diameter and will work with mil-spec stocks and buffer system components commonly found on AR-15 rifles.

What material is it made from and how durable is it?

It's made from 6061 T6 aircraft-grade aluminum with a hard-anodized finish. This combination provides excellent strength-to-weight ratio and long-term corrosion and wear resistance.

How many positions does it have, and what does that mean for me?

The six-position design allows you to adjust the length of pull to fit your needs—whether you're accommodating different body sizes, adding gear, or tuning feel and handling on your rifle.

Is this made in the USA?

Yes, this UTG Pro receiver extension tube is proudly manufactured in the USA.