The LBE Unlimited Railed Gas Block (brand part number ARRGB-UH) is a .750-inch gas block built in black anodized aluminum for AR-platform rifles. It’s sized to the upper receiver height, putting its integrated Picatinny rail on the same plane as the receiver top rail so a front sight or other accessory mounts in a natural, co-witnessed position. Three set screws are included to lock the block securely to the barrel, giving a straightforward install for anyone building or upgrading an upper. It’s a simple, no-frills gas block for builders who want a railed front sight mounting point without sourcing separate parts.

Key Specifications

• Sized for a .750-inch barrel gas journal diameter.
• Built in upper receiver height, matching the receiver’s top rail plane.
• Includes an integrated Picatinny rail for front sight mounting.
• Ships with three set screws included.
• Finished in black anodized aluminum.

Frequently Asked Questions

What barrel gas journal diameter does this fit? A .750-inch gas journal.

Does this include mounting hardware? Yes, three set screws are included to lock it to the barrel.

Why choose upper receiver height? It puts the rail on the same plane as the receiver top rail for a natural, co-witnessed sight mount.

Buy the LBE Unlimited Railed Gas Block – .750, Upper Receiver Height

Add a railed front sight mounting point without sourcing separate parts. Order it from our LBE Unlimited lineup, part of our AR gas system selection, at our Lubbock, Texas gun shop for fast, direct shipping.