This^^^^^I've done a little of what you are talking about on an M&P and it does help but it's nothing close to what you get with the Apex setup.
It does cost twice as much to do a trigger on a Smith as a Glock but you do end up with a VERY nice trigger.
[FONT="]NRA Life Member[/FONT][FONT="]-- [/FONT] NRA Basic pistol instructor[FONT="] [/FONT][FONT="][/FONT]
[h=3]Certified Glock armorer—GSSF Member[FONT="][/FONT][/h] [FONT="] [/FONT]1911, M&P & Ruger MK III Mechanic[FONT="] [/FONT]