package includes ump with upgrades (list at bottom), 1 mag, sight of your choice (rmr or quality scope style red dot) , and spare parts (gb shell and tymia wiring harness) Upgrades: Shs 13:1 gears 32tpa neo motor Teflon coated cylinder Shs full metal tooth light- weight piston Lonex cylinder head Wired to deans Aluminum cylinder head.