APS 6.03mm 190mm Power Up Extended Inner Barrel and Silencer with Adapter (-12mm CCW To -14mm CCW) For ACP601 Black Hornet Series GBB Pistols AirsoftAPS 6. 03mm 190mm Power Up Extended Inner Barrel and Silencer with Adapter ( 12mm CCW To 14mm CCW) For ACP601 Black Hornet GBB Pistol Made out of metal. Inner Barrel Bore Size 6. 03mm Inner Barrel Full Length 190mm Detail Texture and marking on the body of the silencer. Counter Clockwise 14mm CCW thread. Comes with thread cover. Comes with Adaptor ( 12mm CCW To 14mm CCW). Suitable for APS ACP601 Black Hornet GBB Pistol. Color Black Silver Weight