HI, new to the forum. Would like to know if Mr. Hinderer is still making new XM-18 3" knifes?
I believe Hinderer Knives will build 3" XM-18s in the future. They seem to build in batches, they just completed a batch of Gen 2 XM-24s over the summer and the current batch of knives is the Gen 4 XM-18 3.5". I would love to get a Gen 4 X18 3" Production Slicer so hopefully they make some of those and I can find one.
And what the ratio between 3.5 versus the smaller 3"? Thanks all.
Hmm, about 6:7

On a more serious note, all the specifications are here:
http://www.rickhindererknives.com/rick-hinderer-knives/xm-folding-knives/
I highly recommend the 3" XM-18, I carry one daily.
Regards,
Rich