AirsoftPro inner barrel centering tools for Well MB-01,04,05,08 or Maruzen APS compatible bolt-action sniper rifles. The inner barrel centering tools are made of durable POM polymer. The ends of the centering tools have grooves on the outer and inner surfaces for two o-rings, which ensure that the barrel remains tightly aligned. Accurate fixation of the barrel allows for the best performance of the weapon. The outer diameter of the centering tool is 22 millimeters.
