I have heard that a MP5SD parts kit will be coming available in a week or so, so that may be an option for you... or a G36? Man I can Not make up my mind about anything! LOL!
It seems I want it all and I want it now!
I want to watch to see where this price ends. Another one just sold for over $11,000 but the condition was NIB.
I definitely paid a premium but it was in great condition, a fair bit of accessories, and with an AD date code that I have not seen too often. Here's to no regrets!