Forster Quick Change Jaw Assembly S-LARGE (0.468"-0.562")

• Quick-change jaw assembly: Lets the user swap one side of the Co-Ax jaw set without disassembling the shell holder system, reducing downtime during caliber changes.
• S-Large rim range: Sized for 0.468"-0.562" case rims, making it suitable for the large-end configuration used with many common rifle cases on the Co-Ax Press.
• Spring-loaded case support: Works with the Co-Ax jaw system that contacts the case head securely while still allowing the case to self-center during sizing and seating.
• Steel construction: A steel body stands up to repeated press use and helps maintain consistent fit where jaw alignment matters.
• Made in the USA: Built in the United States by Forster, a manufacturer known for precision reloading and gunsmithing tools.

About the Co-Ax Series

The Forster Co-Ax series is built around a different approach to single-stage reloading. Instead of relying on conventional shellholders and a fixed ram arrangement, the system uses self-acting, spring-loaded jaws and a floating alignment concept that helps the case and die center themselves during operation. This design has made the Co-Ax Press one of Forster’s best-known reloading products, especially among reloaders who value repeatability and smooth die-to-case alignment.

Within the lineup, Co-Ax accessories are designed to preserve that same operating principle rather than force the press into a more conventional setup. Jaw options, adapter parts, and related components allow the press to handle different case head sizes while keeping changeovers straightforward. The series is aimed at reloaders who move between calibers, load for precision rifles, or simply want a press system that minimizes unnecessary handling steps. In practice, the defining characteristics of the Co-Ax family are fast setup changes, secure case retention, and a mechanical layout intended to support consistent sizing and bullet seating.

About the Forster Quick Change Jaw Assembly S-LARGE (0.468"-0.562")

The Forster Quick Change Jaw Assembly S-LARGE (0.468"-0.562") is a dedicated Co-Ax press accessory for reloaders who want to speed up caliber transitions without taking apart the standard jaw arrangement each time. It is configured for the S-Large size range and holds case rims from 0.468" to 0.562", matching the large-end jaw orientation used for a broad range of cartridges. For reloaders who regularly switch between case families, that means less interruption at the bench and fewer small parts to manage during setup.

Because this is a complete assembly for one side of the jaw system, it simplifies the process of replacing or reconfiguring the shell holder jaws on a Co-Ax Press. Instead of disassembling the jaw components and dealing with springs and orientation, the user can remove the button head screws and install the replacement assembly directly. That saves time, but it also reduces the chance of putting parts back together incorrectly. In practical use, that matters most for reloaders who want to keep workflow consistent across sizing and seating operations.

The assembly works within the Co-Ax system’s spring-loaded jaw design, which supports the case head securely while allowing the press to retain its self-acting behavior. Combined with its steel construction and compact form, this accessory is a functional upgrade for high-volume bench work as well as for careful precision reloading where efficient, repeatable setup changes are important.

About Forster

Forster Products dates its history to 1935 and focuses on precision reloading and gunsmithing tools. The company is based in Lanark, Illinois, and states that its products are made in the United States. In addition to the well-known Co-Ax Press, Forster’s range includes reloading dies, case trimmers, headspace gauges, and sight-mounting fixtures.

Forster is also known for its Bench Rest Seater Dies, which use a close-fitting chamber to help align the case and bullet during seating, as well as Bench Rest Ultra Micrometer Seater Dies and Bench Rest die sets. That emphasis on alignment and repeatability carries across the brand’s product line and helps explain why Forster tools remain closely associated with careful bench reloading work.

Main Features

• Manufacturer: Forster
• Product type: Quick Change Jaw Assembly
• Size: S-LARGE
• Compatible rim diameter: 0.468"-0.562"
• Accessories for: Case preparation
• Material: Steel
• Color: Silver
• Weight: 5.00 g
• Made in: USA

Warranty

Forster provides a 2-year warranty for this product.

In the Box

• Quick Change Jaw Assembly