I have for sale a new and unfired HK MR556 that has been fitted with a hard to find Tan Geissiele Super Modular Rail. It comes with the hard case, one HK mag, & all documentation. It also includes the original HK rail. This had been sitting in my safe for more then a year and has never been fired outside of HK.
I am $2850 plus shipping and can take payments via USPS or discreet paypal. If you have any questions you can reach me at m.poynter@me.com.