Nucleus – 7mm PRC Prefit Barrel

The Nucleus/Mausingfield/Archimedes actions from American Rifle Company are extremely repeatable, so nice in fact, we are able to offer prefit barrels for their actions configured in a shouldered barrel. This means there is no barrel nut to worry about, with the use of a barrel vise you can spin off an old shot-out barrel and ours will thread directly back on and headspace correctly to your bolt.