Axis uses the same bolt head, Same Barrel Nut, and is compatible with the same small shank barrels. Other than that it has a unique Bolt Length, Bolt Handle, Recoil Lug, Action Screw Spacing Pattern. Currently aftermarket support although getting better is still lacking, but they do shoot. My first build was on an Axis Action. No regrets, just need more options for where I wanted to take my shooting, so I moved up to the M10/110 Actions.