Thumb Grip is designed to have a bigger and better grip of the replica, for right or left.
You have to put a 3 by 40mm long screw with its nut and re...ady to use.
3d model print parameters
Layer height 0.16/0.3
Speed 30/45
Supports from base if you want to stay the part but seen better, if you do not care how it is because the part tha...t but is seen of the piece put it that touches the base and not plow any support.