Vinny2times: Welcome to the forum, many people with a great deal of knowledge. As stated by JH1951 run 500 through it to knock off burrs,let every seat and to give you an idea of what you like/dislike. Frequently people start changing triggers, springs, stocks, etc, and find a weapon begins to malfunction ( feeding, ejection) and they have added so many after market parts that it becomes difficult to diagnose a problem (magazine, ammo,gas tube, port size, etc ). Get to know the gun, and see where benefits could be made for YOU. My one and only suggestion ( if this will be a self/home defense firearm) to add a light with pressure pad. Utg and many other make inexpensive lights that will give you a feel for position on the gun, position of pressure pad, etc. After you have run it awhile, then you may want to switch out for bigger, better, badder, try both a fixed mount and a QD, see what works for you. Be Safe,

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