I usually carry a 3rd gen.G17 and shoot pretty well with it.2 weeks ago a friend let me shoot his Gen.5 G17 for one mag and the accuracy was really bad.Something different with the trigger was throwing me off.So last week I had a friend shoot the gen.5 g17 who is a better shot than me and his accuracy was pretty bad too.I may just need to shoot the gen.5 a little more but so far I will stick with the gen.3