Need help with red dot zero on Gsg-5 !

[gunbuyer]

I have a tacpoint blue ring aimpoint clone. Put it in my gsg-5 22 mp5 clone. Can't sight itnin at 25 yards.. it's adjusted all the way up as far as I know (I say that because it one of those weird adjustment knobs that's up left/up right) and it shoots 4 in too low. I think because the optic sits too high? Factory picatiny top rail as far as I know. Any suggestions?

[Whiterabbit]

is the repeatability great? great groups, just missing POI?

[gunbuyer]

Yes,

[stix213]

The GSG-5 doesn't come with a pic rail (mine didn't), what rail/mount are you using? It sounds like the rail isn't on straight.

Also, what are the reviews on this fake aimpoint? Anyone else complaining of lack of adjustment?