1911vm Posted May 19, 2016 Share Posted May 19, 2016 I use HDs on my 5in 1911 on my glock 17 POA POI . Just put them on a 9mm 4in SA. 2 1/2 -3 in low why?. Link to comment Share on other sites More sharing options...
wanttolearn Posted May 19, 2016 Share Posted May 19, 2016 i believe it relates to the difference in inclination when comparing a shorter vs longer sight radius. Link to comment Share on other sites More sharing options...
turbopower18 Posted May 19, 2016 Share Posted May 19, 2016 If all guns had the same POA/POI there would be no need for different height sights. Sounds like you need a shorter front or taller rear sight. Link to comment Share on other sites More sharing options...
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