I just ordered a Glock 34 gen 4 for competition shooting (speed steel out law, uspsa, and 2 gun) what upgrades other than sights and trigger should I look at? I was shooting my glock 19 in matches but quickly saw its ~short commings~. I plan to get a sight set that has a solid black rear sight and orange fiber optic front, and trigger but I have no idea which trigger to go with to acheive a 3 pound pull. Would a spring kit with the factory tigger help me get down to around the 3 pound mark or do I have to get a aftermarket like Zev? What else would you recomend to upgrade? I've only ever worked on my 1911s, Glock is still kinda new to me especially when it comes to changing parts.