The Armorer's Master Wrench, the ultimate tool for firearm assembly and maintenance. Designed with the professional gunsmith and DIY enthusiast in mind, this wrench is a blend of unparalleled strength, precision and ergonomic design. The tool features a comprehensive set of functionalities, including a Mil-Spec barrel nut wrench and a specialized 10-post design free-float barrel nut wrench for superior grip and fitment. The inclusion of a castle nut wrench, compatible with both standard and aftermarket end plates, further enhances its versatility. Mil-Spec barrel nut wrench for Delta Ring style barrel nuts. Free-float barrel nut wrench with 10-post design for enhanced grip. Castle nut wrench compatible with Mil-Spec and aftermarket end plates. Dual-function muzzle brake wrench, sizes 3/4" and 5/8". 1/2" torque wrench receiver for precise torque adjustments. Ergonomic handle for comfortable, strain-free use. Constructed from high-grade stainless steel for durability. Interchangeable hammer heads: nylon, rubber, brass. Versatile design, converting into an armorer's hammer. Optimal tool positioning to maintain consistent torque application. Steel hammer head for robust, heavy-duty use. Precision fitment ensuring no-slip grip on components. Suitable for both professional and DIY gunsmithing tasks. Streamlined design for efficient storage and accessibility.