The Luth-AR 6-Position Mil-Spec Carbine Buffer Tube is a straightforward, proven upgrade for your AR-15 build. This aluminum receiver extension lets you dial in your stock position for comfort and control—whether you're running a compact setup for CQB drills, adjusting for body armor, or just finding your natural cheek weld. Built from 6061-T6 aluminum with a hardcoat anodized black finish, it's designed to work with standard collapsible AR-15 buttstocks that accept mil-spec diameter tubes, making it a reliable drop-in component for most modern AR platforms.

Luth-AR keeps the design focused on what matters: solid construction and compatibility. The six positions give you real flexibility in stock placement without overcomplicating things. The black anodize stands up to handling and light corrosion, and the aluminum core keeps weight down. This is the kind of part that works in the background—you install it and don't think about it again until you need a different cheek height.

Whether you're building a duty rifle, a hunting carbine, or a range gun, a quality buffer tube is foundational to a smooth-running platform. This Luth-AR tube slots into that role cleanly, backed by the brand's reputation for no-nonsense AR parts.

Key Features

• Six-position adjustability for custom stock length
• 6061-T6 aluminum construction for strength and light weight
• Hardcoat anodized black finish resists wear and corrosion
• Mil-spec diameter—compatible with standard collapsible AR-15 buttstocks
• Works on AR-pattern firearms with mil-spec receiver extensions

Specifications

Material	6061-T6 Aluminum
Finish	Hardcoat Anodized Black
Tube Diameter	Mil-Spec
Positions	6
Compatibility	AR-15 collapsible buttstocks (mil-spec); AR-pattern firearms

Frequently Asked Questions

Will this buffer tube fit my AR-15?

Yes, if your AR-15 uses a standard mil-spec receiver extension and you plan to install a collapsible buttstock with a mil-spec compatible diameter. Most modern AR platforms fall into this category, but confirm your stock's specs before ordering.

What buttstocks will work with this tube?

Any collapsible buttstock designed for AR-15s that use mil-spec diameter receiver extensions. The six positions give you flexibility in how you mount your stock of choice.

Is this tube suitable for a hunting rifle or duty carbine?

Absolutely. The Luth-AR tube is built for reliable, everyday use on any AR-pattern rifle or carbine—hunting, sport shooting, or otherwise. The aluminum construction keeps weight down while the anodized finish handles field use.

What's the difference between this and other buffer tubes?

This Luth-AR tube is mil-spec in diameter and comes with the option to adjust across six positions. The 6061-T6 aluminum and hardcoat anodize deliver durability. Verify compatibility with your current buttstock before upgrading to ensure they match mil-spec standards.