Pro Arms Tritium Suppressor Sight with RMR Mount for SIG AIR / M17 / M18 / Xcarry (2 colors) Color:Green It includes two mode selector

It includes two mode selector switches

there is more extension choices with different rail attachment accessories

It can effectively hold the chamber to the frame tightly and lock the wheel on preset position to prevent loosens

It has a 2 hour cut-off function on the charger to prevent the battery from over-charging

Pro Arms Tritium Suppressor Sight with RMR Mount for SIG AIR / M17 / M18 / Xcarry (2 colors) Color:Green It includes two mode selectorTritium Suppressor Sight with RMR Mount Fit for SIG AIR VFC P320 M17 M18 Xcarry 6mm GBB Tritium Options: Orange Green Item No.: PA VFC M109 (Orange) PA VFC M110 (Green)*PS: Please note: installing parts assemble fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular