I've been trying to model a sawed-off shotgun and have run into a wall on how to model the handle. The general shape isn't too much of an issue as I just extruded a plane based off of a reference image (the second image), but there are sections that I don't know how to model.
For instance, the handle transitions from a circular base to a more squared-off shape. Also, on the sides there is a raised, triangular portion that I've found is tricky to model.
Any advice on how to go about modeling this would be greatly appreciated.