well if you are so stupid you can't handle a few simple drop in mods and got the extra bucks, by all means buy aftermarket kits and pay someone to install them! the glock trigger system is one of the easiest to understand and its not magic, simple geometry really. some people are just not mechanically inclined. I call them pussies! well that or morons haha. you gotta be pretty stupid to do a "mess up ur glock mod"
other then the springs you can swap out, there are only 3 parts to the glock's trigger really.
There are advantages to using a professionally polished, fully OEM drop-in trigger assembly for a Glock:
1. OEM parts don't void your warranty
2. A professional can do it right the first time more often than not. If not, you can get them to fix the problem -- saves money over fixing your own mistakes, No matter how "smart" or "stupid" you might be, everybody makes mistakes when learning something new.
3. If the new trigger doesn't do what you hoped, you can sometimes switch to a different one (depending on the seller's policy), or resell it and try another one.
4. If you decide you liked the original trigger best, you still have it and can resell the new one.
5. If you ever sell the gun, you can offer it with either one or both triggers. You have the option of selling one trigger separately if the gun buyer chooses only one.
Sometimes the redneck engineering method costs more in the long run. Believe it or not, some of us like to watch how it's done right, and THEN decide it we are willing to try the next time.
YouTube only gets you so far...