I have a unused Geissele Super 42 spring with an H2 buffer. I purchased the extra tungsten weight and installed. It was installed and the BCG was cycled back and forth but I ended up leaving the factory Knights Spring in the rifle. The carrier closing on the buffer face made a few small marks, but that is it.
Paid $85 from Geissele Directly. And this combo has been in my parts bin a few months. 60 shipped. sold. Firm. If you need pics, send me your email.
Paypal plus fees or USPS MO. Thanks,