The cheapest and best bbl/stock combo i have found is the one at J&G sales in Shotgun News magazine. They sell a 16" or 20" bbl and a hogue overmold stock for 110$.
I got the 16" and put on a simmons 6-18, vq target hammer and bolt buffer. It shoots under 3/4" 5 shot groups at 50 yards off sand bags with Winchester dynapoints, cci mini mags, wolf,and federal gold.
And as far as putting it together, its verry easy. For the barrel you take out 2 allen screws that hold a v-block that clamp the reciever to the barrel. If the bbl and reciever are still stuck together slam the bolt home a few times and it will dislodge the barrel.
When you put the new barrel on, time it so the extractor on the bolt is in the center of the extractor grove on the new barrel. And be verry careful when tightening the 2 allen screws, if you strip them your in deep do do.
Another thing to rember is with a new bbl the chamber is tighter so its a good idea to buy a better than stock extractor. They run about 10$
Another good,cheap upgrade is to dump the factory dovetail scope mount and get a Power Custom weaver mount, i think they are under 14$. And with this mount you also get more clearence to mount a bigger scope.
Hey Shotgun i am in beaverton, so if you need help or want to try before you buy give me a call.
Paul Pribula