I purchased a NIB G17RTF2 last November. So far I have probably 300 rounds downrange. This thing shoots really high. At 7 yrds Im almost 5 in. high. I have tried a 6.1mm rear sight, however I am still way high. My issued guns are a G22 and G27, so I know my way around them. Two other officers have tested this as well, with the same results. Any other ideas before she gets shipped back to Glock? Thanks!