With the performance of 17/32-inch brass as well as the light weight and low cost of aluminum, we bring you the Orange Workshop custom barrel. This barrel has a 12.78mm inner diameter for a tight fit around stock darts. Each is 457mm long (18 inches) and can be easily cut down to any size you need with a dremel or hacksaw. The aluminum is easier to clean up than brass, so you will spend less time sanding and truing up your cuts. 

Note: These barrels are intended for advanced modders who require high performance raw materials for their custom builds.