The listing on Amazon might have been mislabeled (possibly deliberately to get more views). The actual Crawford Kaserp appears to be knife marketed for "close quarter combat" (eyeroll):
http://www.bladehq.com/cat--CRKT-Kasper--646I can't find the Crawford-Kasper knife on the CRKT website.
I am guessing painting the Ritter black and then calling it Crawford Kasper might get a few more hits.