Ok how to set up an ar for competition?

[ThomasA]

Trigger I have no idea what I'm doing

I read somewhere that some people for precision builds use loctite to bed the barrel into the reciever... is that just an idea someone had or is it worth doing?

Geissele makes a great trigger that works in combination with different sets of springs to make whatever kind of pull weight suits your needs. Depending on the competition guidelines they'll have one that fits.

Loctite. yes. it's essentially like bedding an action. it removes the gap between the barrel extension and the receiver. Just smear some blue loctite around the extension and the inside of the receiver, some anti-sieze on the receiver threads, and torque is down, back it off and re-torque several times to set the threads, and set final torque to 30ft lbs then turn to the next gas tube opening.