Well, in our Czech Republic, Air-G-tac.com manufactures a complete new stock for FX Panthera Dynamic where it is possible to screw either a monopod directly into the bottom of the bag rider or a picantiny rail for attaching a small tripod or other accessories. I have already ordered two pieces of this stock myself. They should be in stock during February according to the reply they sent me. Of course there will be a modified skeletonized version already. If you are interested check the attached link.
Butt stock for 0.48L pressure bottle (FX Panthera/Dynamic). The Butt Stock for a 0.48L pressure bottle is specifically designed for use with a larger 0.48L bottle on FX Panthera, Dynamic, and King air rifles.