Home Forums Hunting & Shooting AR and Tactical Rifles What do I have?

Forgive me guys but I'm not at all up on AR's. At the gunshow this past weekend, I traded for this rifle. I thought it might be easier to turn than the 7mm WSM I had.
The only markings on the 24" barrel are shown. Is the 1/8 the rate of twist? What weight bullets should I try in it. Any ideas on the trigger? The set screws in the front and back have me of guard.
Any idea of what kind of price range something like this is going for?

Not good at non competition guns, Armalite lower, put together upper, who knows what brand barrel. JP adjustable trigger.

Price depends on a LOT. 500-800 or more depending..