I have the USSS on my PS90, and was thinking of switching it out to an EoTech 512. Last time I checked (middle of 2007) there was nothing that was able to lower the EoTech a little. Now with TROS having their mounts for other optics, i was wondering if anyone has come up with a mount that can get the EoTech a little lower. Yes, I know there are the milled receivers available, but I do not want to screw around with the receiver or replace it. As it is, I'm unaware of exactly how much room there is between the stock reciever's top side and the bottom of the Eotech with last year's available mounts.