Description
The Lee Precision 90933 Automatic Processing Press, better known as the APP, is the press reloaders reach for when they want to knock out case prep without babying every piece of brass. It is the first press of its kind that lets you mount a die at either the top or bottom, which opens up a level of automation you normally won't find on a single station setup. With a little over three inches of stroke, it handles everything from small pistol brass up to the larger belted magnum cases.
What the Lee APP Press Actually Does
Think of this as your dedicated processing station. You can deprime, swage primer pockets, bulge bust, and size cast bullets as fast as you can work the handle. The X-press shell holder design is a big part of why it moves so quick, since it lets the case pass right through after the operation is done instead of making you stop and reset. Folks running big batches of range brass tend to love how fast it clears a pile of 9mm or 223.
Built Around a Frameless Design
The APP uses a frameless layout where nearly all the force travels straight through the steel linkages to the die rather than through a frame. That gives you almost unlimited visibility and hand clearance, so you can see exactly what's happening and keep your fingers out of pinch points. The upper die carrier is counterbalanced by a centrally mounted coil spring, which keeps the handle from dropping on its own. Mounting is simple on any bench or table with no under swing to work around.
Dies and Shell Holders
The top carrier and base are machined to accept Lee Breech Lock bushings, so they take standard 7/8-14 dies from any manufacturer. It also works with standard press shell holders, giving you plenty of flexibility if you already have Lee gear on the bench. One handy side benefit reloaders mention is how it keeps the dirty, gritty, lead-contaminated spent primers routed away from your work surface instead of making a mess everywhere.
Key Specifications
- Manufacturer: Lee Precision
- Manufacturer Part Number: 90933
- UPC: 734307909338
- Press Type: Single Stage
- Thread Pattern: 7/8"x14
- Accepts Die Size: 7/8-14 (Breech Lock bushings)
- Material: Steel
- Hand: Ambidextrous
- Stroke Length: Just over 3 inches
- Length: 15.70 in
- Width: 8.05 in
- Height: 7.65 in
- Shipping Weight: 4.65 lbs
- Country of Origin: United States
What’s Included
- Automatic Processing Press (APP)
- Automation kit
- Bottle adapter
Frequently Asked Questions
What can I do with the Lee APP press?
The Automatic Processing Press is built for fast case prep and cast bullet work. You can deprime, swage primer pockets, bulge bust, and size cast bullets as quick as you can run the lever. It also works as a convenient single station reloading press when you need one.
Will the Lee 90933 take my existing dies and shell holders?
Yes. The top carrier and base are machined for Lee Breech Lock bushings, so they accept standard 7/8-14 dies from any manufacturer. It also uses standard press shell holders from most makers, so a lot of your existing gear will carry right over.
Does the APP come with X-press shell holders?
The X-press shell holders are generally sold separately from the base press package, which includes the press, automation kit, and bottle adapter. The X-press holders are what give the APP its speedy pass-through operation, so many reloaders add the ones they need for their calibers. It's worth confirming exactly which accessories ship with your specific package before you order.
How large of a cartridge can the Lee APP size?
The press has a little over three inches of stroke, which is enough to size the larger belted magnum cartridges. That range lets it handle everything from common pistol brass up through big rifle cases, so it covers most of what a typical reloader runs.




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