This threaded outer barrel replaces the stock outer barrel of the CZ P-09 Gas Blowback pistol. The outer barrel is of solid construction and can replace the stock outer barrel without any modification. The barrel features a 14mm CCW threading that allows for Barrel Extensions Tubes to be used with the CZ P-09. This can help conceal a longer inner barrel which adds in range and accuracy or be just be for a more tactical look. Features: Easy install No modifications need