LBE Unlimited Carbine-Length Gas Tube – AR-15 Melonite Finish

The LBE Unlimited Carbine-Length Gas Tube is a direct replacement gas tube designed for AR-15 carbine-length gas systems. This component channels combustion gases from the gas port to the gas key on the bolt carrier group, cycling the action for semi-automatic operation. Whether you're replacing a worn tube or building a new upper receiver, this gas tube restores reliable cycling in standard carbine-length configurations (typically 16-inch barrels with mid-front sight base placement).

Constructed from steel with a melonite finish, this gas tube resists corrosion and heat-related wear better than uncoated alternatives. Melonite treatment penetrates the steel surface for long-term durability in high round-count environments. Installation requires a gas tube roll pin and is straightforward with basic armorer tools—no professional gunsmithing required, though familiarity with AR-15 assembly is recommended. Compatible with mil-spec upper receivers and low-profile or A2-style gas blocks.

• Part Type: Gas Tube
• Compatible Firearms: AR-15 carbine-length gas systems
• Length: Carbine (approximately 9.75 inches)
• Material: Steel
• Finish: Melonite (black)
• Installation: Drop-in with basic tools (roll pin required, not included)
• Includes: Gas tube only (roll pin sold separately)