Hi
I have two of these great pistols, the comments above about having a loose grip are spot on. i think that it is best to practice both type of lose hold, single and double, when you have decided the one you prefer then set up the sights using that grip. If you need to use single and double grip then get two HW45's (the wife believed that excuse). I find I can swop from single to double grip on my CO2's without adjusting the sights, but not with the HW45's. But I still prefer shooting the 45's.