Lee Precision 91555 Pro 4000 Press Kit 9mm Luger

The Lee Precision Pro 4000 Progressive Press Kit for 9mm Luger brings serious volume capability to your reloading bench without the five-figure price tag of dedicated progressive systems. If you're slinging hundreds of 9mm rounds a year—whether for competition, training, or personal stockpiling—this press handles the repetitive work with modular automation you can dial in exactly as much or as little as you want. It ships complete with everything needed to start reloading 9mm: a three-die carbide set, shell plate, Universal Case Feeder, Auto-Drum Powder Measure, and Safety Prime system, so there's no separate shopping list before your first batch.

The build-once, swap-forever design centers on Lee's Breech Lock quick-change system across all four press stations. Once you dial in your dies into color-coded spline drive bushings, cartridge changeover happens in seconds—primer size and all—with zero readjustment. That speed matters if you're cycling between 9mm and other calibers. Spent primers exit through a through-ram disposal tube with built-in collection, keeping your workspace tidy. The ergonomic wood grip roller handle reduces hand fatigue during long sessions (Lee charges separately for this on other models), and a hex wrench with built-in storage rack keeps caliber-change tools close.

This is a press for reloaders who understand their workflow and want the flexibility to automate what slows them down—case feeding, priming, powder metering—without paying for features they don't need. The modular construction means you can start simple and add upgrades later, or lean fully into the automation from day one. If 9mm volume is your game, the Pro 4000 delivers progressive speed at a price point that won't make you choose between a quality press and keeping ammunition costs reasonable.

Key Features

• Progressive press design with four stations for high-volume 9mm reloading
• Breech Lock quick-change system for instant caliber changeover with no die readjustment
• Includes Lee three-die carbide set and shell plate for 9mm Luger
• Universal Case Feeder for automated case placement
• Auto-Drum Powder Measure for consistent powder charges
• Safety Prime system with through-ram primer disposal and collection tube
• Modular design—add or remove automation as your workflow requires
• Color-coded spline drive breech lock bushings for fast, repeatable die setup
• Includes both large and small priming arms for different primer sizes
• Ergonomic wood grip roller handle to reduce hand fatigue
• Hex wrench and built-in tool storage rack included

Specifications

Frequently Asked Questions

What comes in the box and what do I need to buy separately to start reloading 9mm?

The Pro 4000 kit includes everything needed to reload 9mm: the press itself, three-die carbide set, shell plate, Universal Case Feeder, Auto-Drum Powder Measure, Safety Prime system, priming arms, wood grip handle, and hex wrench with tool storage. You'll need to supply brass, primers, powder, and bullets—consumables that aren't included.

Can I switch this press between different calibers, or is it locked to 9mm?

The Pro 4000 is sold as a 9mm Luger kit, but the Breech Lock system allows you to change calibers by swapping dies and the shell plate into new breech lock bushings. Once your dies are set in a bushing for a different caliber, you can swap between setups in seconds with no die readjustment. You'd need to purchase die sets and shell plates for additional calibers separately.

Do I have to use all the automated features, or can I run this as a simpler press?

The modular design lets you choose your level of automation. You can use the Universal Case Feeder and Auto-Drum Powder Measure, use just one or neither, or disable features entirely. The press is built to work however you prefer—there are no complex adjustments needed to change your automation level.

How does the primer disposal system work?

Spent primers exit through a tube that runs down the ram and into a built-in collection container, keeping primers organized and off your bench. The Safety Prime system manages priming at the press station before the case is seated.