u/Elegant_Motor_3295

Picked this up the other day and looking for some more info on it. I’ve seen plenty of the f2 and f4 models, but never this one. Previous owner said it was very rare. Anyone know anything about them? Thanks in advance!

Bought a Studio Select that came with this grip (I know the black is not og for this model) and thought it looked/felt a bit off but not entirely sure. Any help would be greatly appreciated!