This is a pistol I made for my custom Kup figure. It is based on the ones he uses in many of the IDW comics. I made it as close as I could to the comic depiction but I added a "Wreckers" symbol on the stock just 'cause I think it looks cool!
This gun has a 5mm post and can be used with any figure with that size hand (which is almost all modern Transformers). This gun has been tested in WSF Polished and came out great. As soon as I get it painted, I'll add photos. The peg is slightly oversized to allow material wear during the polishing process. If ordered in an unpolished material, some light sanding will be needed for a proper fit.
I am also making this gun available as a pair since Kup carries 2 in the comics. If you're interested in the set, check my shop. Check out the custom head for Kup while you're there!