Used G&G CM18 mod 1. Works great and includes metal sights, and G&G metal high cap mag. Front rail is a bit wobbly but this is common(rail is plastic) for this model and does not affect performance at all. Internals are stock with a version 2 metal gearbox(fully upgradable). No issues and can send more pics or video. Looking for 135 with shipping included to CONUS. local meet in south-east NE.