The Breakthrough Clean Technologies Armorer’s Wrench is the ultimate tool for your AR15/M4. Constructed out of durable titanium-plated stainless steel and includes a standard size muzzle device wrench. Easily installs and removes receiver extensions and castle nuts, functioning with both Mil-Spec and Pin-Style Barrel Nuts. Compatible with ½” Socket / Torque wrench and comes with a bonus Butt Stock Screwdriver. We at Breakthrough Clean Technologies are committed to making your equipment maintenance faster and safer than ever. Our cleaners efficiently remove fouling, dirt, grease, and grime, and our lubricants provide long-lasting corrosion protection in any environment. Our user-safe products are odorless, non-toxic, non-hazardous, and non-staining, so they’re safe for you and your equipment. From our cleaning tools to our cleaners and lubricants, we strive every day to bring you the safest and most effective ways to clean and protect your equipment. Breakthrough Clean Technologies—The Difference is Clear.