Depends what you want them for and what parts you want? Single shot. Straight out the box you won't get tack driver accuracy. The barrels only 12" and not the best. The valving Is pritty basic (so Is the hammer) and so the power Is up and down alot which leads too acuracy problems. Find the sweet spot and you'll still be able to take rabbits or whatever out to 35 or so yards. If you get one and start modding It you probably won't stop. I hate to think what I've spent on mine so far but I'm getting close to tack driving
Regulated tank, hybrid hammer, neumerous adaptors for the tank...silencer