u should get a smart parts proggresive barrel which is a good beginner barell. It is about 40 dollers. Then you might want a new bolt. Those can go from 20-60 dollers. Maybe a mod. New feed neck, its about 30 bucks. All i really would suggest if you don't have much mulla is a new feed neck so your hopper isnt' sticking up really high. Then save up some money and try getting a new gun with some of the stuff you would want to upgrade to.