Gun Chronos about 425 fps with .2s and about 30 rps What it needs: Charging handle spring A stock screw Retaining pin for bolt catch Stock sling swivel Parts list King Arms Trademarked M4 Receiver VFC stock VFC outer barrel assembly VFC Gearbox ZCI Motor BTC Spectre MkII 2x Siegetek 20:1 Gears 1x SHS 13:1 Gear (replace this with a 20:1 and rps will jump to about 30) SHS piston Lonex Steel Bushings ZCI full cylinder Prommy 135 spring Stock spring guide Lonex Cylinder Head Lonex Hop Up Chamber Maple leaf bucking Lapped ZCI barrel SHS Nozzle Unknown piston head G&P KAC M5 RAS Overall its about 500 dollars in aftermarket parts, and another 350 in base gun costs BUT WAIT THERES MORE The weapon comes with the following Harris Bipod Angled Grip Vertical Grip Aim Sports 4x32 scope Ergo grip if you want to replace the A2 style Iron Sights Original M16A2 style Handguard and Magazines are available on request as well as an element PEQ 16 Overall this is about 1100 to 1200+ dollars right here of parts and labor but I'm selling for 725. I prefer local pickup (Central NJ) but i can ship if need be (buyer pays). Only trade i want is an ICS CXP APE Carbine. Price and items included negotiable. Ask about my other items for sale