I added cutouts to either side for clearance of the forward/reverse switch. I also made a narrower version for the Ryobi 18v glue gun and a solid one for glue sticks. There are holes in the original for six #8 screws, but I found four to by sufficient.
I used 3 walls with 15% infill in PLA and they are quite rigid when mounted.
The author remixed this model.
I added cutouts to either side for clearance of the forward/reverse switch. I also made a narrower version for the Ryobi 18v glue gun and a solid one for glue sticks.