ALL custom grips, including CZ wood grips are thicker than the rubber grips. The exception are Hakan's grips and only when requesting, since he is the only one making these by hand - one at the time. All others are machined, thus the thickness, and that is also true for the Marshall's grips.
I am out of the country and will be back in November. I have at least three sets by Hakan so I could probably part with one set, if you still want them, but you need to be patient and wait until the end of November
