I built one several years back , had to inlet barrel, lock etc. Also had to polish brass, removed some wood from the handle too bulky. Good beginner project for anybody to try their hand at. Don't know how they are now, but you have to start some place. Take you time and think everything thru. I would next build the Lyman GPR rifle kit, you can get very good experience with a long gun kit. Read, everthing you can on bulding rifles and smoothbores. Good Luck..