I own an MR2. First I love the package it came in, very well packed. I enjoyed how the stock is an option, and how it comes with it. The way it functions is pretty neat. Yes it is a spyder, and it acts like a spyder. I have a Ric AK hopper for it, and it works fine.
I'm not sure for the 25 BPS that they claim, but for the cost, I'm very impressed.