Two or three companies have equipment to get the brass back to new size. Do a goggle search on case rollers or I will enclose a link to a company that sell equipment for that operation. That is one reason so many people do not like Glocks and there sloppy chambers. http://www.magmaengr.com/products.php look part way down the page it is called a case master. Unless you have a lot of brass not really worth the cost of the equipment brass brings $ 1.38 a pound right now I just halled 110 pounds of brass fired in older 40 caliber Glocks and sold it. Seems like the new guns support the chamber better and they are not as bad as the older guns about stretching the web of the case. The unsupported chamber in 40 caliber is the reasons Glocks were nicknamed Ka Boom.