Forster Products Quick Change Jaws "S" LG
The Forster Products Quick Change Jaws "S" LG is a replacement jaw assembly designed for reloaders running the Forster Co-Axial press. This large-size S-series jaw holds cartridge cases with rim diameters from .468" to .562", making it ideal for magnum rifle cartridges and larger bottleneck rounds. The quick-change design eliminates the need to disassemble and reassemble shell holders every time you switch calibers—simply swap out the jaw assembly and you're ready to reload a different cartridge size.
The jaws use a spring-loaded mechanism that automatically closes around the cartridge case base as you work the press, then releases the case when the stroke is complete. This self-acting design keeps your hands safer and your workflow smoother than manual shell holders. Because the jaws mount in only one direction, there's no risk of installing them backwards or flipping the wear plate—a common frustration with traditional shell holders that can slow down setup or cause case damage.
If you're a serious reloader who regularly swap between magnum calibers or just tired of losing small springs and spare parts, the Quick Change Jaw system saves real time and headache. You'll keep your reloading session flowing without interruption, and you won't have to hunt through your bench looking for misplaced components. This jaw assembly pairs with Forster's Quick-Change system on their Co-Axial press.
Key Features
- Spring-loaded jaws automatically grip and release cartridge cases
- Holds .468" to .562" rim diameter cartridges (S-Large size)
- Quick-change design for fast caliber swaps without disassembly
- Foolproof one-way installation—impossible to install backwards
- Reduces lost parts and press setup time between caliber changes
- Compatible with Forster Co-Axial reloading press
Specifications
| Jaw Assembly Size | S-Large (LG) |
| Rim Diameter Range | .468" to .562" |
| Compatible Press | Forster Co-Axial |
| Mechanism Type | Spring-loaded quick-change jaws |
Frequently Asked Questions
What cartridge sizes does the S-Large jaw fit?
The S-Large jaw is designed to hold cartridges with rim diameters between .468" and .562". This covers most magnum rifle cartridges and larger standard rounds. If you need a different size range, Forster also offers S-Small (.343" to .422"), LS-Large (.531" to .625"), and LS-Small (.312" to .375") assemblies.
Is this compatible with my Forster reloading press?
The Quick Change Jaws "S" LG is designed for the Forster Co-Axial reloading press. If you own a different Forster model or another brand's press, this assembly will not be compatible.
Do I need to buy the entire jaw assembly each time I want to reload a different caliber?
No. The quick-change design allows you to swap out just the jaw portion without replacing the entire assembly. You only need to purchase additional jaw sets for the caliber ranges you reload, then swap them as needed.
Can I install the jaws incorrectly?
The design prevents backwards installation. The jaws will only fit in one direction on the quick-change assembly, eliminating the risk of flipping the wear plate or installing them upside down.

