How well does the grip fit you? You know.......you could do your own trigger work by swapping factory parts, new guide rod/spring is a drop-in part, most aftermarket barrels for the Glock don't need fitting, you can polish the slide on your Glock by hand, or with a Dremel tool using white rouge compound and the felt wheels. But if you've got money to burn (maybe enough to buy another Glock pistol), then might as well send it to the gunsmith. Me? I do my own Glock work...rather spend the money on ammo.