The only thing needed is to put an O-ring under the forearm. Take the Forearm off, go to a ggod hardware store, find an O-ring that will fit over the metal lug on the bottom of the barrel. Slip the O-ring on, put the forearm back in place, then start shooting. The O-ring will free float the barrel sort of, but makes a differance.
Sometimes you need a trigger job, sometimes you don't. But first off just shoot it, the more you shoot it the better it gets. After you have shot it a bit you will know if you need a trigger job or not. About half of mine have had trigger jobs the others have not. Due to having a transfer bar, you need to make sure you pull the trigger all the way back, every shot. Otherwise the transfer bar will not come up and fire the gun.
With the 130 or the 140gr bullets, your effective range is over 450 yards.So with practice it can make a very good collector of game. You do your part and you will be very happy with that gun.