Gee....maybe it's called personal preference. We have so little left we can pick and choose about anymore so to each his own. If you want to spend a couple of hundred bucks versus thousands in range time I think it's a good idea. My M&P 9MM 5"Pro Series is a bit gritty but acceptable for now. My M&P 9MM 4 1/2" barrel....well the trigger sucks donkey b#%@s from the factory....with the Apex work it is a great carry gun.