Upgraded kwa iris 4

Selling my beast of a ar (kwa iris 4)shoots very accurate and is currently set to around 300 fps on .25 but can be adjusted with a ROF at around 25rps!! Comes with 2 batteries and 4x120 mags and a suppressor The gun is flawless except slight scuff marks(can probably be buffed out and a slight chip near pistol grip. The new price is over £400 so this price is a steal and might end up regretting this, reason i’m selling so cheap is the gun is currently not working it was working perfectly fine on my game day the other day(i have vids of it working then )but then i tested today and it started slowing down and then stopped and is now not shooting. I reacon it is a easy fix could just be a cut wire or the gearbox is just locked, you will prob take to a shop and they will fix infront of you it’s i can’t access the repair shop at the moment Message me for me info or any vids or more pictures Can be shipped or collection from epsom.