The Lee Auto-Prime hand held priming tool has been recently upgraded to handle all of your favorite brands of primers. The new Auto-Prime XR priming tool features a patent pending elevator pin which separates a single primer from all others within the storage tray, reducing the chances of a chain fire. Just like the original Lee Auto-Prime, the Auto-Prime XR still has that good primer seating "feel" and is an excellent tool for a beginning or high volume handloader. Other upgrades include an ergonomic, unbreakable lever along with large and small primer trays with slide-on covers. The primer trays are now square in design to easily accept all brands of primer boxes. The primer Mfg: Lee Precision