I think the metal Kahrs are made to this day because Justin Moon's first design was the K9 and he has a soft spot for them. Kahr just announced the T9 Elite 18---because I guess the T9 wasn't low-volume enough.
In my gun shop travels, I've seen exactly ONE K9 for sale(and I bought it) and two MK40s---the MK40s have sat at the same gun shop for at least two years.
I've never seen a T9....