So as an AR newbie, I am trying to make sense of all the info. This is NOT a what AR should I buy, rather than a question of what to look for before purchasing my next rifle. If there is a link to the info then I will take that. I am not brand specific, just wanna know what the heck I am talking about.

Such as, I that some AR's have staked this and pinned that, whats important?

Lowers, some are forged, molded, billet, steel, playdough, other than weight, whats different?

Barrels, which length is optimum, and what material is good?

ETC, ETC....... There are so many makers out there that do things there way, who's right or wrong.

So basically, how can I be an informed, smart shopper when the time comes that I wanna order a "custom" build.

BTW: does anyone run rifles from D-Tech or Carey custom rifles?

Thanks in advance for the info!