On all my other Glocks , I've changed all but one. I got one G-17 with the junk sights it came with. I've patiently been trying to sharp shoot , but can not zero in on a 1" bulls-eye at 60 feet.! Painstakingly , focus , breath , trigger pull , I should be nailing that bulls-eye. I'm all around it and can not figure out if it's me , the sights , ammo , don't understand.? I've got a gen. 2 ,17 and no problem.! Shot the center out that target.! The new 17 , I'm all around it..? Close , a 2 1/2 group , but no cigar. Been shooting some 30+ years and that one Glock , ..? Anybody else have the same problem..? I'm thinking of going fiber ops. for sights!