I have primarily been interested in Milsurp but my interests have been expanding recently and would like to get an AR. I'm not terribly familiar yet other than what i read on the forum and see online. Primarily for plinking and really just collecting. I have read mixed opinions for 1st time owners in regards to it being best to buy one factory built or to build your own. I am probably looking for a mid grade gun. Is there anything someone new to this platform should look for or stay away from. Factory build/ build your own? I appreciate the advice.