MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
you do have to sand he inside of the stock muzzle the barrel makes the darts move smoother through the kit but is not necessary. if you want to attach any thing to the front of the gun like a suppressor you need the barrel. i think i spent a total of about $60 usd including the gun.