The gun is about 14" LOP, double trigger, and a very traditional gentle radius pistol grip shape. The shooter is about 5'6" or 7" and this LOP matches up with his other guns within reason.

Since this gun is not so different in LOP and grip shape than other guns that he shoots, I suspect that the triggerguard is of different shape and location relative to the triggers. I will check the things others have suggested.