I want to get my glocks barrel, slide stop and magazine release either chromed(or nickle?) plated or polished. Does one without against corrosion, chipping & scratching more then the other? Which night sights between these 3, Meprolight Low Profile Trijicon HD Trijicon Novak For day time usage, & carry. Read the novaks are good against not snagging on stuff but dont know if they are the best for shooting in day time? And do you suggest getting orange/yellow + green or just all green sights?