Had a glock 23 with night sights and a 19 without. Decided to sell the 23 so I swapped the sights around so I would have the night sights on the 19. (trigicon) Took the 19 to the range and with factory WW, and handloads, at 25 yards it shoots 10" high. I have swapped and added night sights on many glocks and never had this kinda problem. Had to move the rear sight near even with the slide to bring it to the center, left and right. Anyone else run across this before? Thanks PS have taken .010ths of the top of the rear sight, but still shoots 8-10" high at 25.