GLOCK 30 GEN 4 THINGS TO KNOW BEFORE YOU BUY

I set a Tarran Tactical kit right into a gen 3 g23 and It is now super lite but I however couldn't hit anything at all with it. My Pal could shoot it really well but I struggled. Finally I changed the stock sights into a Dawson Precision Fixed Competitors Sight Established and now I do pretty good with it.Is one somewhat extra trustworthy? Does one