STNGR Low Profile Set Screw Gas Block for AR15/M4 .750in Black. The low profile design allows you to easily install virtually any handguard over The gas block. Never worry again that your new handguard won't fit your rifle. Eliminate The hassle. Tucked neatly away beneath The handguard and secured with set screws. Guaranteed to stay in place under nearly every condition. Specifications for STNGR Low Profile Set Screw Gas Block for AR15/M4: Manufacturer: STNGR Color: Black Fabric/Material: Steel Gas Block Journal Size-Diameter: .750 in Size: One Size Gun Make: AR Platform Gun Model: AR-15 Condition: New Features of STNGR Low Profile Set Screw Gas Block for AR15/M4 Stop worrying about compatibility. The low profile design allows you to easily install virtually any handguard over the gas block. Never worry again that your new handguard won't fit your rifle. Never buy another gas block again. Premium grade steel defends against heat corrosion and abrasion and backed by our Swarm lifetime warranty. Eliminate the hassle. Tucked neatly away beneath the handguard and secured with set screws. Guaranteed to stay in place under nearly every condition. Package Contents: STNGR Low Profile Set Screw Gas Block for AR15/M4 What firearm models does the manufacturer say STNGR Low Profile Set Screw Gas Block for AR15/M4 is compatible with? The manufacturer says that STNGR Low Profile Set Screw Gas Block for AR15/M4 is compatible with AR-15STNGR LPGB: Low Profile Set Screw Gas Block for AR15/M4 .750in Black