The adjustable charge bar comes with the pro update kit for the reqular square hopper. The pro dispenser just has the 4 disks, the adjustable bar has to be purchased seperatly. The adjustable bar is nice if you need it. Check out
http://www.leeprecision.com/cgi-data...uct/AD2302.pdf to see if the powder disks meet your needs first. And yes the pro kit has everything you need (but the die of course) to start using for pistol cartridges. Hope this helps.