I've gotten more information in the last 10 minutes reading this site than the past year from Remington. The last time I called (a couple of months ago) I was told that they would start shipping in September... Six months prior to that I was told it would be July now I'm expecting to hear it will be January 2016. My shooting partners say I've been way too patient - I'm starting to think they are right.
I wish they would start shipping. I've been wanting the R-51 for my carry gun ever since I first read about it. I use a pf-9 now, but it is really uncomfortable to shoot enough to keep proficient. I also had to send it in for cracks in the slide a few months ago, after three years of usage (one box of WWB per month). To their credit, Kel-Tec just replaced the thing, giving me the same serial number with a letter added.
Anyway, I want my R-51 !!!!!