RAIL NOT INCLUDED - retro arms split gearbox - BTC specter mosfet - ceramic 8 mil bearings - retro arms cylinder, cylinder head and nozzle - guarder sp120 spring (shoots about 365 with a .25) - ZCI high torque motor - SHS 13:1 gear set - Prometheus shims - SHS steel tooth piston - retro arms piston head - retro arms trigger and selector - PDI barrel with maple leaf 70 degree bucking - VFC hop up - Daniel defense receiver - MFT stock - vfc buffer tube - steel barrel - Pts flashhider - zci pistol grip All the internals are brand new I can send shooting videos and pictures of anything you would like to see