Sniper AR-15 Wrench for Castle Nut A1/A2 Flash Suppressor A2 Receiver Extension 223/5.56 Rubberized Steel Black. These Castle Nut Wrenches designed by the experts at Sniper save you essential space in your toolbox by allowing you to work on buttstock tubes compensator castle nuts and free float barrel nuts all with one comprehensive device. For reliable durability this Sniper AR-15 Multi-Tool Wrench is constructed with steel and comes complete with a rubberized grip for a comfortable gunsmithing experience. Use the Sniper AR-15 Stock Combo Wrench Tool for fast and easy rifle adjustments without carrying the weight of multiple tools. Specifications for Sniper AR-15 Castle Nut Combo Tools/Wrenches: Manufacturer: Sniper Color: Black Finish: Rubberized Caliber: 5.56x45mm NATO .308 Winchester .223 Remington Gun Type: Rifle Fabric/Material: Steel Gun Model: AR-15 Condition: New Features of Sniper AR-15 Castle Nut Combo Tool / Wrench: Steel construction For use on buttstock tubes compensator castle nuts and free float barrel nuts Rubberized grip Package Contents: Sniper AR-15 Castle Nut Combo Tool / Wrench What firearm models does the manufacturer say Sniper AR-15 Castle Nut Combo Tools/Wrenches is compatible with? The manufacturer says that Sniper AR-15 Castle Nut Combo Tools/Wrenches is compatible with AR-15Sniper ARTL10: AR-15 Wrench for Castle Nut A1/A2 Flash Suppressor A2 Receiver Extension 223/5.56 Rubberized Steel Black