Do you have a Ruger Mark IV Target? Are you right-handed? Do you find size 12 gloves a bit tight?
Here are several versions of various sizes. The 15.81mm grip is more for smaller hands but the others are for large hands.
If I make any more right-handed grips, I'll add them here in the future.
The author remixed this model.
Based my grips off of the original, but traced a completely filled version instead.