NOT KNOWN FACTUAL STATEMENTS ABOUT GLOCK 30 GEN 4

I place a Tarran Tactical kit right into a gen 3 g23 and It is really now Tremendous lite but I continue to couldn't strike everything with it. My Close friend could shoot it rather well but I struggled. Finally I changed the inventory sights to some Dawson Precision Preset Competitiveness Sight Set and now I do very good with it.My guess would be