Yes, almost all Weatherby rifles can be immediately fitted with the Javelin range of Spartan Bipods and Tripods. This is through the use of the Classic Rifle Adapter.
This is normally achieved by simply unscrewing the existing sling swivel stud and simply refitting the Classic Rifle Adapter in its place.
Furthermore, Classic Gunsmith Adapters can be installed on most Weatherby Rifles.
For the use with the Valhalla an M-LOK or Picatinny rail must be attached.