I modified Gundam ver. Ka to make it look like a Sentinel GM.
Using the Katoki Gundam as a base, I used the head, waist armor, shins, etc. from the GM Custom.
The shape of the back of the head has been changed with putty to make it look more like a Sentinel.
As I wanted to use the Gundam's details for the calves, I filled in the gaps between them and the GM Custom's shin parts with putty to make them match.
The backpack is a high-mobility school bag from B Club.

MG Gundam ver.Ka Modified GM Custom (Sentinel Style) | ドデン三式's Gunpla works