Kaw Valley Precision AR-15 Adjustable Gas Block .750 Black Small. KVP Gas Blocks feature a threaded gas tube retention pin that eliminates the installation awkwardness surrounding tiny gas tube roll pins The KVP gas tube retention pin gas adjustment screw and the gas-block all install/adjust with the same 3/32 Allen wrench. NO additional tools required Machined from USA Steel and Black Oxide Finished. Comes with: (2) Set Screws (1) Adjustable Screw (1) Threaded Gas Tube Pin Note: Thread locker is suggested. Specifications for Kaw Valley Precision AR-15 Adjustable Gas Block: Manufacturer: Kaw Valley Precision Color: Black Fabric/Material: Steel Size: Small Gun Make: AR Platform Gun Model: AR-15 Condition: New Finish: Oxide Package Contents: Kaw Valley Precision AR-15 Adjustable Gas Block What firearm models does the manufacturer say Kaw Valley Precision AR-15 Adjustable Gas Block is compatible with? The manufacturer suggests that Kaw Valley Precision AR-15 Adjustable Gas Block is compatible with AR-15Kaw Valley Precision KVP-GB-750-A: AR-15 Adjustable Gas Block .750 Black Small