I bought a new Glock 19 gen 4 yesterday. It is shooting about 4 inches high at 7 to 25 yards. I shot about 150 rounds yesterday and it didn't get much better. The pistol is very accurate with a 4.5 pound trigger. My Glock 17 shoots about 2 inches high with Meprolight night sights but 4 inches is a little to much to deal with. Is changing the sights the best option? I hate the factory Glock sights.