I am curious: if you remove (or loosen) the grip screw, does the gap go away?
OP, does your 10/22 have some kind of textured finish on it? Looking through the gap at the 10/22 underneath, it appears to have a non-skid texture on the paint?
Not too sure. Why would that make a difference?
I had a Nordic chassis that fit perfectly until I added the pistol grip, then there was a slight gap, similar to yours. In my case the pistol grip screw was slightly too long and forced the receiver up slightly. However I have no idea if that would be a factor in your situation.
OP, does your 10/22 have some kind of textured finish on it? Looking through the gap at the 10/22 underneath, it appears to have a non-skid texture on the paint?



























