Description
Reloading 45 ACP gets a whole lot smoother with this four-die set from Lee Precision. It bundles their popular carbide three-die lineup with the Factory Crimp Die and pairs the whole thing with the Breech Lock quick-change system, so if you're running a Breech Lock enabled press, you get to skip the fiddly part of threading dies in and out every time you switch stations.
The heart of the set is the carbide full-length sizing die with decapper. Carbide is the reason you can size 45 ACP brass without any case lube, which saves a messy step and speeds up your whole session. Sizing and decapping happen in one pull, then the powder-through expanding die bells the case mouth while you drop your charge. The bullet seating die sets your bullet to depth, and the carbide Factory Crimp Die puts on that final crimp so every round chambers clean and feeds like factory ammo.
What the Breech Lock System Does for Your 45 ACP Reloading
Each die drops into a colored Smart Lock bushing that tells you at a glance which die is which. Once you dial in a die inside its bushing, it stays set. Pop the bushing out and the next one twists right in, and your adjustments come back exactly where you left them. That's a real time saver when you're moving between calibers or coming back to a project after a break. Worth noting: these bushings are made for Lee Breech Lock enabled presses, so double-check your press before ordering.
Why Reloaders Keep Reaching for This Lee 45 ACP Die Set
Lee has been building affordable, no-nonsense reloading gear since 1958, and their carbide pistol dies have earned a loyal following for being easy to set up and dependable round after round. This set is aimed at folks working through mixed range brass who want repeatable results without babysitting their equipment. Whether you're feeding a 1911, a Glock, or a revolver chambered in 45 Auto, this kit covers the full process from sizing to crimp.
Key Specifications
- Manufacturer: Lee Precision
- Caliber: 45 ACP
- Set Type: Breech Lock Carbide 4-Die Set
- Number of Dies: 4
- Sizing Die: Carbide, no case lube required
- Bushing Type: Colored Smart Lock quick-change (spline drive)
- Compatibility: Lee Breech Lock enabled presses
- Manufacturer Part Number: 91940
- UPC: 734307919405
- Country of Origin: United States
- Shipping Weight: 1.54 lbs
What’s Included
- Carbide Full Length Sizing Die with Decapper
- Powder Through Expanding Die
- Bullet Seating Die
- Carbide Factory Crimp Die
- Colored Breech Lock Smart Lock bushings
- Universal Shell Holder
- Powder Dipper
- Instructions and Load Data
- Flat 4-die storage box
Frequently Asked Questions
Do I need case lube with the Lee 45 ACP carbide die set?
No. The carbide full-length sizing die lets you size 45 ACP brass without any case lube, which is one of the biggest perks of a carbide pistol die. That saves you a step and keeps your brass clean, so you can size and decap in one pull and move right along.
Will this set work on any reloading press?
This is a Breech Lock die set, so it's designed for Lee Breech Lock enabled presses. The colored bushings snap in and out to speed up die changes on those presses. If your press uses standard 7/8×14 threaded stations, you'll want to confirm compatibility or look at the standard threaded Lee 45 ACP set instead.
What's the difference between this 4-die set and the 3-die set?
The 4-die set adds Lee's carbide Factory Crimp Die to the standard three dies. That extra die applies a final crimp and resizes the finished round if needed, so it chambers freely with factory-like reliability. For range brass and semi-auto pistols like the 1911, that Factory Crimp Die is a nice bit of insurance.
What does the colored bushing system actually do?
Each die sits inside a color-coded Smart Lock bushing that makes it easy to tell your dies apart at a glance. Once you set a die inside its bushing, it holds that setting, so you can swap dies in seconds and return to your saved adjustments without re-dialing. It's a real time saver when you're running through multiple stages.





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