LBE Unlimited ARRGBUH Upper Receiver Height Railed Gas Block - AR Platform, Black Anodized Aluminum

The LBE Unlimited ARRGBUH is an upper receiver height railed gas block built for AR platform shooters who want to mount optics and accessories at the proper sight line without sacrificing gas block functionality. This black anodized aluminum gas block integrates Picatinny rail space into its design, letting you attach backup sights, lights, or other tactical gear while maintaining a low-profile gas management system. Whether you're building a modern sporting rifle, a dedicated competition gun, or an optics-ready patrol rifle, a railed gas block simplifies the balancing act between controls, sighting systems, and durability.

LBE Unlimited engineered this block to AR-spec compatibility, so it fits standard mil-spec gas tubes and barrel journals. The upper receiver height positioning is designed to work with your existing upper assembly without requiring modifications or workarounds. Black anodized aluminum construction offers corrosion resistance and a professional finish that matches most AR builds.

If you're upgrading an AR with a free-float rail or precision barrel setup, or you're simply looking to add mounting real estate to your gas block, the ARRGBUH delivers the extra rail space and integration many modern builds demand. It's a straightforward way to keep your rifle's profile clean while staying flexible with accessory selection.

Key Features

• Integrated Picatinny rail for mounting backup sights and tactical accessories
• Upper receiver height design for proper sight plane on AR platforms
• Black anodized aluminum construction for corrosion resistance
• AR platform compatible with standard gas tubes

Specifications

Frequently Asked Questions

Will this railed gas block fit my AR upper receiver?

The ARRGBUH is designed for AR platform compatibility and is sized at upper receiver height. It fits standard mil-spec gas tubes and barrel journals used on AR builds.

What can I mount to the integrated rail?

The Picatinny rail can accept backup iron sights, red dot mounts, tactical lights, or any standard Picatinny accessory. You have the flexibility to configure it for your specific mission.

Is this a drop-in part or does it require modifications?

We recommend consulting your rifle's manual or a qualified gunsmith to ensure proper fit and function with your specific barrel and upper assembly.