American Rifle Company developed its Nucleus and Archimedes rifles to accept Savage-style small-shank barrels to give owners the ability to easily mount their own barrels without needing a gunsmith. This also provides the opportunity for these actions to become multi-caliber platforms with little effort, and the ARC Bolt Head and Extractors Kit makes this a possibility for owners of these guns.

Each ARC Bolt Head is machined from hardened steel and treated with a DLC coating that wards off wear and corrosion. The bolts are available in a range of popular calibers, so all you need to do is swap out your barrel, and you're ready to run an all-new caliber in your dependable ARC action.

Fits Nucleus 2.0 Actions and Archimedes Actions.