I have a Beretta 96g Elite 2, about 2 years old and just short oh 1000 rounds through it. I clean the gun after every trip to the range. When I first got the gun it was relativly acurate, now is shoots 6-8 low at 20+ ft. I had a freind load a few snap caps in a mag to see if I was pulling. Outcome I didnt pull and there was a good group 6 inches low of the target. Any thought on cause and would a pair of new sights fix the issue? Thanks