Its been argued to death earlier, but I don't think higher sights are an issue for your application. Mags, sights, etc are compatible, as is the ambi mag release and if you move to a full length guide rod w/insert. The slide stop is Gen 5 only and magwell needs to be Gen 5 as it is a wider gun (would squeeze the grip too much to not drop mags). I would check triggers, I got a Gen 5 trigger, but the trigger bar, springs, etc all seem the same. Plunger geometry is different.