, I don't have FP Monstructor in hand. May I ask how is his size compared to a standard Combiner Wars combiner? Also, I'd like to verify if its combiner hands are compatible with 5mm peg handles.
You can have a look at the Extinction sword set (https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=2ahUKEwjJyKK_4JnoAhXIAYgKHQH4Bg4QFjABegQIBhAB&url=https%3A%2F%2Fwww.shapeways.com%2Fproduct%2F6QNNLUNUA%2Fpotp-volcanicus-extinction-sword-set-extended&usg=AOvVaw1cVXMO5cARyX3l5CjEfVBR) or if any other weapon accessory catches your fancy, I can do a resize for it to fit your needs.
Best regards, Ariel