back on track of where this thread should be...

Will this be your primary home defense weapon?
How much are you looking to spend?
What caliber?
What barrel length?
How often are you planning on going to the range?
Are you going to hunt with it?
You planning on using a reflex/holographic sight?
Do you want it to shoot quarter size groups at 300+ yds?

I could go on and on but these are a few basic questions that should allowyou to narrow down what type of ar you want to start with.