Two Glock 19s, one right on the other high?

[AWMP]

I have two glock 19s, one shoots point of aim everytime. The other shoots about 3 inches high.(same ammo, same distance, etc)
Any ideas for fixes?
Both have fixed meprolight night sites. thanks
AW

[gary newport]

You might try measuring the height of the REAR sights. It is possible that the wrong height sight was installed on one of your pistols.

[AWMP]

Good idea, will check, thanks