Accurate and precise, a tight bore inner barrel is a must-have upgrade part for airsoft rifles. The Madbull Tight Bore 6.03id Inner Barrel is a high-quality stainless steel replacement part. Sleek and smooth, this tight bore barrel has a 6.03 inner diameter and measures 363 mm (14.3 inches) in length.
Why choose this inner barrel?
"id" refers to the inner diameter of a barrel. These measurements range between 6.01id and 6.08id. Tighter barrels are thought to be more accurate.