Measured with 0,20 g Rockets Professional BB & Nimrod green gas.Distance 4,5 m.Used upgrade : Vorsk Agency silencer extension - inner barrel 6,03 x 147 mm ,2 x Airsoftpro inner barrel centring for A.E.I. suppressor ( silencer ) and Airsoftpro A.E.I. suppressor ( silencer ) 140 x 40 mm.