Retro arms shell and motor setup comes with 2 springs for cqb and outdoor use (350fps and 400fps with a 363mm barrel hopup off and .20) Parts Retro arms shell Retro arms nozzle Retro arms trigger Guarder tappet 12:1 gears Lonex cylinder Lonex cylinder head Shs prelightend piston Lonex piston head Guarder springs for both ZCI anti reversal latch Gate Titan advance ZCI 16tpa motor Starwei 4500 motor Aoe and shimmed perfectly Shoots mid 30s to low 40s depending on motor and spring combo (11.1 45c battery) Looking for either cash or v2 fe setup if you need vouches please feel free to ask in the airsoft classified page on Facebook