The only defect with my sigma 9mm is the trigger pull. I am carrying it right now at this moment as my house gun. I have had for about 20 yrs. I have shot a few water moccasins with mine and one possum.
I am planning to replace it with a glock that can accept the holosun red dot, it has a heavy trigger also, but it is still better than what trigger the sigma has on it.