Forster Quick Change Jaw Assembly LS-SMALL (0.312"-0.375")

• Quick-change assembly: The jaw set installs as a complete aligned unit, so caliber changes on a Co-Ax Press take less time and involve fewer loose parts.
• LS-Small rim range: Designed for 0.312"-0.375" case rims, this assembly supports small-rim cartridges that require the LS jaw geometry for secure case retention.
• Foolproof orientation: The quick-change design helps prevent incorrect jaw or wear-plate positioning, reducing setup errors during frequent changeovers.
• Steel construction: A steel jaw assembly provides the durability needed for repeated press use and consistent case handling over time.
• Made in USA: Built in the USA, this accessory fits naturally into Forster’s precision-focused reloading system for Co-Ax users.

About the Co-Ax Series

The Forster Co-Ax series is built around a different approach to single-stage reloading press design. Instead of relying on conventional shellholders for each cartridge family, the system uses spring-loaded shell holder jaws that support a wide range of case heads while allowing the case to self-center in the press. That layout is one of the defining traits of the Co-Ax Press, especially for reloaders who value repeatable alignment during sizing and seating operations.

Within Forster’s reloading lineup, the Co-Ax platform sits as a precision-oriented system for handloaders who want efficient caliber changes, controlled case handling, and a press layout suited to careful bench work. Its accessories, including standard and LS jaw options, are intended to extend compatibility across different rim sizes without turning the setup into a collection of separate shellholders. The quick-change jaw assemblies add another practical layer to that concept by simplifying swaps between jaw sizes. For reloaders working across multiple cartridges, the Co-Ax family stands out for its emphasis on alignment, modularity, and reduced setup friction at the bench.

About the Forster Quick Change Jaw Assembly LS-SMALL (0.312"-0.375")

The Forster Quick Change Jaw Assembly LS-SMALL is a dedicated Co-Ax Press accessory for cartridges with 0.312"-0.375" rim diameters. It uses the LS jaw pattern, which is intended for case heads outside the range of the standard S jaws, making it a practical choice for reloaders who work with smaller-rim cases and want to keep the press properly matched to the cartridge.

Its main advantage is speed and consistency during setup changes. Because this is a complete quick-change assembly, the jaws are already aligned as a unit; the user simply replaces the button head screws rather than disassembling and reconfiguring individual jaw parts. In practice, that means less downtime between calibers, less chance of losing small components, and less risk of reinstalling parts in the wrong orientation. For a bench that sees frequent cartridge changes, that convenience translates directly into a smoother workflow.

The steel construction supports repeated use in a press environment where the jaws are constantly handling brass during insertion and extraction. At only 5.00 g, the assembly adds virtually no bulk while still performing a critical fitment role. For reloaders using the Co-Ax system as intended, this LS-Small jaw assembly is a simple but important part of maintaining secure case support and efficient caliber-specific setup.

About Forster

Forster Products dates its history to 1935 and has long focused on tools for precision reloading and gunsmithing. Based in Lanark, Illinois, the company states that its products are made in the United States. Its catalog covers core bench equipment such as reloading dies, case trimmers, headspace gauges, and sight-mounting fixtures, reflecting a strong emphasis on repeatable workshop accuracy.

Among reloaders, Forster is especially well known for products such as the Co-Ax Press and for die designs like its Bench Rest Seater Dies, which use a close-fitting chamber to help align the case and bullet during seating. That background is directly relevant to accessories like Co-Ax jaw assemblies, where precise fit, reliable function, and efficient bench operation matter more than unnecessary complexity.

Main Features

• Manufacturer: Forster
• Product type: Quick Change Jaw Assembly
• Size: LS-SMALL
• Compatible rim diameter: 0.312"-0.375"
• Accessories for: Case preparation
• Material: Steel
• Weight: 5.00 g
• Color: Silver
• Made in: USA

Warranty

Forster provides a 2-year warranty for this product.

In the Box

• Quick Change Jaw Assembly LS-SMALL