Description
If you run a Forster Co-Ax and you're tired of fumbling with springs and flipping jaws every time you change calibers, this LS-Small quick-change assembly is the fix. It's a complete, ready-to-install set that holds case rims from .312" to .375", and it swaps out as a single unit instead of forcing you to tear down and rebuild your shell holder jaws every time you move to a different cartridge.
The way it works is simple and smart. While a case sits in the jaws, it's supported by spring-loaded arms that contact the base of the cannelure, which gives you more positive, controlled extraction. The jaws are self-acting, so as you insert a case into the die and run the handle, they close around the case head on their own. Raise the handle and they open right back up to release the case. No shell holders to buy, no extra steps.
Why the LS-Small Jaw Assembly Earns Its Bench Space
The real win here is time. Instead of removing the button head screws, flipping sides, re-seating springs, and praying nothing rolls off the bench, you pull the whole assembly and drop in the next one. It also foolproofs the process, since there's no way to install the wear plate backwards or flip a jaw the wrong direction. Anyone who has lost a tiny spring into the carpet knows exactly why that matters.
Picking the Right Co-Ax Jaws for Your Calibers
The LS-Small covers the smaller end of the case-head spectrum, making it a solid match for cartridges in the .22 Hornet neighborhood and other small-rim brass that the standard jaws don't handle as cleanly. Forster's "S" jaws come factory-installed and cover the bulk of common cartridges, while the "LS" sets like this one fill in the gaps for very large and very small case heads. If you load a wide spread of calibers, having a dedicated quick-change set on hand keeps your whole workflow moving. Made in the USA and built to the same standard as everything else that wears the Forster name.
Key Specifications
- Manufacturer: Forster Products
- Model: Quick Change Jaw Assembly LS-Small
- Manufacturer Part Number: 028271-204
- UPC: 757253991387
- Size: LS-Small
- Case Rim Range: 0.312" to 0.375"
- Compatibility: Forster Co-Ax Press
- Function: Spring-loaded, self-acting shell holder jaws
- Country of Origin: USA
- Shipping Weight: 0.275 lb
What’s Included
- Forster LS-Small Quick Change Jaw Assembly (complete single-side assembly)
Frequently Asked Questions
What case sizes does the LS-Small quick change jaw assembly handle?
This LS-Small assembly holds case rims from .312" to .375". It's aimed at the smaller end of the case-head range, including cartridges like the .22 Hornet and similar small-rim brass. If you load larger case heads, Forster offers S-Large, S-Small, and LS-Large versions to cover other rim diameters.
Will this fit my Forster Co-Ax press?
Yes, the quick-change jaw assembly is designed specifically for the Forster Co-Ax press. You remove the 10-24 button head screws, pull the existing jaws, and drop in the quick-change set. No traditional shell holders are needed with the Co-Ax system.
How is this different from the standard Co-Ax shell holder jaws?
The standard jaws require you to disassemble them, flip sides, re-seat the springs, and rebuild every time you change case sizes. This quick-change assembly swaps out as a single complete unit, so there's nothing to lose and no way to put the wear plate on backwards or flip a jaw the wrong way. It's a real time-saver when you bounce between calibers.
Do I need the LS jaws if my press already came with S jaws?
The factory "S" jaws cover the majority of common cartridges, so many reloaders never need anything else. The "LS" sets like this one fill the gaps for very large and very small case heads that the standard jaws don't grab as cleanly. Grab the LS-Small if you're loading small-rim brass outside the standard range.




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