WELL got its own airsoft version of the Webley MKIV revolver and it's available at Tanie Militaria. Here is their take on this revolver that was in service for almost a century... "The revolver replica was made  mostly of metal . Thanks to this, it maintains the right weight and proper balance. Metal elements include a skeleton, a barrel, a cylinder magazine, a trigger and a hammer. Only the grip linings are made of plastic.

The replica is powered by a standard 12g CO2 capsule, thanks to which the arrows can give the BB a speed of around 360 FPS. The capsule is located in the grip, under the lining. The grip itself is profiled, thanks to which the replica is very comfortable in the hand.

The revolver is loaded in a similar way as in the flammable version - the BBs are loaded into the attached shells / dummy cartridges, and then the finished cartridges are placed in the cylinder."