Outerwild AR10/AR15 Saltwater Arms Low Profile Gas Block .750in Set Screw Black Nitirde. Combined with our stainless steel barrel for an unstoppable pairing. Specifications for Outerwild AR10/AR15 Saltwater Arms Low Profile Gas Block: Manufacturer: Outerwild Fabric/Material: 416 Stainless Steel Gas Block Journal Size-Diameter: .750 in Gun Make: AR Platform Gun Model: AR-10 AR-15 Package Contents: Outerwild AR10/AR15 Saltwater Arms Low Profile Gas Block Stainless Steel Gas Tube Roll Pin Stainless Steel Set Screws What firearm models does the manufacturer say Outerwild AR10/AR15 Saltwater Arms Low Profile Gas Block is compatible with? The manufacturer suggests that Outerwild AR10/AR15 Saltwater Arms Low Profile Gas Block is compatible with AR-15 AR-10Outerwild 4014-3401-101-O: AR10/AR15 Saltwater Arms Low Profile Gas Block .750in Set Screw Black Nitirde