Yes it's worth getting.
They are made basicly like an AK74 but with a 223 barrel.
To do the stock and pistol grip conversion, you mainly just have to remove the plate on the bottom of the receiver and remount the trigger gaurd, all the holes are already there.
On the barrel the grooves are already cut on the side of the barrel for the hand gaurd retainer, but you'd have to replace the gas block and front sight, I don't think these can be reinstalled after removing.
I'm going to soon be putting up some pics of mine, I'll be putting it in the conversion section.