PVA is doing the action wrench with release slated for July 20. Nucleus specific BarLocs for savage type barrels are currently backordered. The recoil lug has the taper for the Barloc built in. I’m hoping that there will be enough room on the threads for a non nucleus Barloc to work as that is what I have at the moment. Fit it up on an SR3 and it is super simple.....but there wasn’t enough clearance with their rail for it to work.