Hi Guys I just bought an new AR15. I wondering what things need to be done to it prior to shooting it for the first time? It seems to be well oiled and ready to go. My 2 other guns were bought used so I have no exp with a new gun.

Do the factories usualy test fire Guns prior to shipping them? I bought a Doublestar flat top with a 16in.

Its my understanding I should use brass only for the first few hundred rounds?

Thanks for your time, God bless.

Man Im excited, I just need it to stop raining now!