I just bought my M&P Shield 9mm. While there, the guy who sold it to me showed me his Shield and let me feel the difference in my stock trigger versus his which he did a trigger job on (he is a Smith M&P Armorer) and I am 99% sure I want to get the trigger job on my Shield. I did the trigger job on my Glock 23 myself a year or so ago, bought the parts at Lotus Gun Works and did it in a matter of a few minutes by watching an instructional video on You Tube a few times. I am told the internals of S&W M&P's while similar to Glocks, are not near as simple. Saying that, I am wondering if I should just pay the Armorer who I bought the Shield from $90 to do it for me or if I can do a Glock by watching instructional videos I should be able to do the same with the Shield. What are your thoughts?