Is the black model different than the red and green?
The red and green specs are the same the black seems to be bigger and weigh more??
I would attribute the differences in the description of black to copyedit errors on Gerber's website. Notice that the black version also supposedly has the following "features":
Blade Retracts Partially Into Handle
Hard Plastic Sheath
G-10 Composite Handle
The first doesn't make sense at all, and the other two can't be true while being offered at the same price.
By the way, PM sent for Green yesterday -- looking forward to it, and definitely empathize with the demands of working at a university.