Head - 25th Serpentor
Torso - 25th Zartan 2.0
Arms - 25th Croc Master
Legs - 25th GI Joe Trooper (lowers later changed to 25th Flint)
Vest - 25th Roadblock V2 (modified)

My custom Muskrat has a working holster, working knife sheath, and working machete sheath. I used a Serpentor head and sculpted on the hair. Originally he had the legs from a 25th GI Joe Trooper, but I updated Muskrat using the lower legs from a 25th Flint. They're a little bulkier than the originals to give him a little more balanced look since his arms are so muscular. I also gave him a Marauder Gun Runners shotgun.