This picatinny bottle clamp is designed to fit the FX Dreampup bottles.
The mount slides onto the bottle and is tightened using a single bolt, the rubber pads allow for a very tight solid fit on your bottle it will not move once tightened.
It has a single 35mm picatinny rail allowing you to attach a bipod/torch Etc.
This mount will work with all bottles/models of FX Bottle rifles providing the bottle is no smaller than 55mm.