Again I am new to the AR but have tried to do a little homework while researching different models. I learned that my first order of business is the stake the bolt carrier screws, and possibly loctite the trigger pins to prevent them from walking
Yeah I was fairly new to t myself when I bought my AR 8 months ago learned alot in a short time the info is out there but I honestly haven't hd any trouble with those things myself nothin has moved or come apart after roughly 2000 rounds give or take 100 been flawless but I take exceptional care of my firearms after shooting them so that helps keep an AR running smooth
Sorry, but you need to hear the other side of the story before pulling out the wallet. No way would I spend $850 on that DPMS. A little patience can give you a much better AR for the money. If you want an A2 FSB then why settle for an OR gas block? Get what you want. Use this time to learn the platform and select what you want not just anything off the rack. Read Agent Tikki's AR Primer and keep watching for deals on better rifles. Compare PSA, you'll get a lot more for the same money.
Loctite the trigger pins... Where did you get that? Trigger/hammer pins don't walk out unless something is wrong.
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek