Hello all, from the sandbox. I am not new to shooting pistols or rifles. I have a new Glock 19X that I purchased before I left for this deployment. I love the thing but I was wondering what people's recommendations are as far as upgrades. I currently only use it for the range and a carry pistol, but I am interested in getting into 3-gun competitions. I am not new to tearing apart weapons and putting them back together. I have stripped and cleaned many M4's or M16's in my military career and have built 4 or 5 AR15s from scratch (down to the gas tube, gas block, etc.). I am wondering what people's opinions are as far as triggers, slide release, mag release, barrels, etc. are. Any comments are welcome.