Tiger Rock .750 w/ Roll Pins And Wrench Low Profile Gas Block Black Small. Specifications for Tiger Rock .750 w/ Roll Pins And Wrench Low Profile Gas Block: Manufacturer: Tiger Rock Gas Block Journal Size-Diameter: .750 in Size: Small Gun Make: AR Platform Gun Model: AR-15 Features of Tiger Rock .750 w/ Roll Pins And Wrench Low Profile Gas Block Mil-Spec dimensions .750 diameter Stainless Steel construction Non-reflective Silver Package Contents: Tiger Rock .750 w/ Roll Pins And Wrench Low Profile Gas Block Roll Pin 2 Set Screws Allen Wrench What firearm models does the manufacturer say Tiger Rock .750 w/ Roll Pins And Wrench Low Profile Gas Block is compatible with? The manufacturer says that Tiger Rock .750 w/ Roll Pins And Wrench Low Profile Gas Block is compatible with AR-15Tiger Rock GB01-AR: .750 w/ Roll Pins And Wrench Low Profile Gas Block Black Small