Spikes Tactical Wrench - Heavy Duty M4 Stock. A must-have for completing your weapon build these Specialty Wrenches developed by Spikes Tactical simplify the gunsmithing process by holding your weapon stock open with an over-sized easy to wield tool. With a phosphate finish and 4140 chromoly steel construction every detail of the Spikes Tactical Heavy Duty M4 Stock Wrench is optimized to the task at hand. Completely adjustable the Spikes Tactical Heavy Duty M4 Stock Wrench Kit gives you every edge you need to complete your build with the best equipment. Specifications for Spikes Tactical Heavy Duty M4 Stock Wrench: Manufacturer: Spikes Tactical Country of Origin: USA Features of Spikes Tactical Heavy Duty M4 Stock Wrench: Material: 4140 Chromoly Steel Heat Treated Finish: Phosphate Finish Includes: Hand Wrapped in 550 Paracord Package Contents: Spikes Tactical Heavy Duty M4 Stock Wrench Spikes Tactical SAT1000: Wrench - Heavy Duty M4 Stock