I've never had any reliability problems with mine and never any problems with accuracy.
I recently upgraded to a steyr and had a mare with it. It's cost me a few bob to put right and I've had a lot of help from Chrisc, lavant lad and Johnnyboy on here to get it sorted. It seems to be right now and is a lot nicer to shoot than the ar20.
It's also lighter.
It's definatly my preferred gun, I might keep the ar as a spare.
My ar had been modded so the cocking action was smooth but firm and the trigger had been sorted.
I like them but the steyr is a lot nicer to shoot