FFS is the only thing that can come to mind after ordering a replacement reciver for my RPK. The only cyma compatable part I could find was the Echo 1 Red Star LMG receiver at Evike. Ok,only $40, then $60 for shipping. So wait a couple of days for the first e-mail from UPS asking my company ( I'm not a company) to return the full import paperwork for the gun part. Note the use of the word 'gun' here. So you e-mail them and point out it's a 'toy' part. Then wait a couple of days for paperwork regarding the import of RIF's, along with a customs declaration. Fill out the forms, for the part. Wait a couple of days. E-mail UPS again to be told they haven't recived the paperwork yet. Reply with the original e-mail that had the paperwork attached, attached to that e-mail. Wait a couple of days. Check the tracking, pay the £27 quid in 'admin' fees, including £10 import duty? Wait a couple of days, part turns up at last, broken! Try to stay calm, contact Evike and wait....lets see whats going to happen.