Forster Quick Change Jaw Assembly LS-LARGE (0.531"-0.625")

• Quick-change assembly: The jaw set is supplied as a complete aligned assembly, so one side of the Co-Ax shell holder can be swapped quickly without disassembling the original jaw components.
• LS-Large rim range: Designed for 0.531"-0.625" case rims, this version extends the Co-Ax system to larger case heads that standard jaws do not cover.
• Spring-loaded case support: The jaws support the case at the base of the cannelure for more positive extraction, helping cases release cleanly during sizing and seating operations.
• Self-acting jaw operation: In use, the jaws open and close with the press cycle and then release the case automatically, which keeps handling smooth during repetitive loading work.
• Steel construction: The steel build suits repeated caliber changes and regular bench use, giving this small press component the durability expected in a precision reloading setup.

About the Quick-change Jaws for Co-Ax Press Series

Forster Quick-change Jaws for the Co-Ax Press are purpose-built accessories for reloaders who want faster caliber changeovers without giving up the alignment and case handling that define the Co-Ax system. Within Forster’s reloading lineup, these jaw assemblies sit alongside the press itself as practical upgrade parts for users who load across multiple case-head sizes and want to keep setup time under control.

The series is built around a simple idea: instead of taking apart standard shell holder jaws and reconfiguring individual pieces, the reloader installs a complete aligned jaw assembly. That reduces downtime at the bench and also lowers the chance of reinstalling parts incorrectly. The design keeps the familiar Co-Ax advantages intact, including spring-loaded support and self-acting jaw movement that opens and closes with the press stroke. Available in multiple size configurations for different rim diameters, the Quick-change Jaws series is aimed at reloaders who value repeatable operation, efficient workflow, and compatibility with a broad range of rifle and cartridge cases.

About the Forster Quick Change Jaw Assembly LS-LARGE (0.531"-0.625")

The Forster Quick Change Jaw Assembly LS-LARGE (0.531"-0.625") is the large-end LS version for reloaders working with case rims that fall outside the standard jaw range. Its main role is to let a Forster Co-Ax Press handle larger compatible case heads while preserving the press’s distinctive shell-holding method. For reloaders who move between different cartridge families, that means less interruption and a cleaner transition from one setup to the next.

Because this is a complete quick-change assembly, installation is straightforward: the aligned jaws replace one side of the shell holder jaw setup by removing the button head screws and fitting the new assembly in place. In practical terms, that is faster and more predictable than rebuilding the jaw arrangement piece by piece. It is especially useful on a busy loading bench where several calibers may be processed in one session.

In operation, the jaw design does more than simply hold a case. The spring-loaded jaws contact the base of the cannelure for more positive extraction, while the self-acting mechanism opens and closes during the press cycle and then releases the case automatically as the handle is raised. That helps maintain the smooth handling expected from the Co-Ax platform during sizing and bullet seating. With its steel construction and dedicated 0.531"-0.625" rim capacity, this accessory is a focused upgrade for precision reloaders who need the right jaw geometry for larger compatible cases.

About Forster

Forster Products dates its history to 1935 and has long focused on tools for precision reloading and gunsmithing. The company is based in Lanark, Illinois, and states that its products are made in the United States. Across its catalog, Forster is known for reloading dies, case trimmers, headspace gauges, and sight-mounting fixtures, with the Co-Ax Press standing out as one of its established reloading products. The brand’s emphasis has consistently been on bench tools that support careful setup, repeatable alignment, and controlled cartridge preparation for demanding handloaders.

Main Features

• Manufacturer: Forster
• Product type: Quick Change Jaw Assembly LS-LARGE
• Compatibility: Case preparation
• Rim size range: 0.531"-0.625"
• Material: Steel
• Weight: 5.00 g
• Color: Silver
• Made in: USA

Warranty

Forster provides a 2-year warranty for this product. That stated period suits a precision reloading accessory intended for regular bench use and routine caliber changes.