Looks like a hinged pin to me.
Just kidding, I figured the picture was to show hinge pins can be installed with no gap.
I used hinge pins in my kit built Kadet Senior and there was no gap on that plane either. Minnflyer bought the plane at an auction and the gap is not a testiment to hinge pins (although it seems he implied that) it is poor installation by the builder.
sportrider_fz6- Use whatever comes with the airplane. alot of kits come with epoxy hinges and I haven't had a problem with those either. I like the ease of CA hinges though.