Polarstar F2 engine Retro arms gearbox (black) Maxx ME hop up (Christmas) Speed trigger Eruotactics E.RG with wolverine storm reg. Retro arms selectors Strike Industries cobra trigger guard MAC Carbon fiber hand guard (8 inches) MAC Carbon fiber outer barrel gold (6inches) Prometheus 6.03 155mm inner barrel Comes with second Maxx ME (Christmas) and Prometheus 6.03 260mm inner barrel + mock silencer for outdoor. Both barrels using maple leaf buckings.