LANTAC AR15 Nitride Intermediate Length Gas Tube Black Nitride LAN. A great addition to your personal or professional arsenal these Rifle Gas Blocks designed by Lantac are crafted from stainless steel extruded tube that is Nitrided for enhanced corrosion and heat resistance making these tubes last much longer than their un-treated competition. Nitrided tubes also eliminate light reflection keeping your gas tube running cleaner and cooler than the competition. Another fantastic feature of these Lantac AR15 Nitride Tubes is that they eliminate handguard light reflection keeping your sight picture clear and illuminating at all times. If you're seeking a black tube that eliminates light reflection install the Lantac Intermediate Length Black Nitride Gas Tube. Specifications for LANTAC AR15 Nitride Intermediate Length Gas Tube: Manufacturer: LANTAC Condition: New Package Contents: LANTAC AR15 Nitride Intermediate Length Gas Tube LANTAC LANGT-I6003: AR15 Nitride Intermediate Length Gas Tube Black Nitride