This is a modern version in stainless of the venerable Model 25 - which unfortunately has ''the lock'' but that aside, is a fine revolver. Here we see two half moon clips but actually full moon clips are the norm for use.
This is a method permitting use of rimless .45acp cartridges, as the clips hold the rounds and make for fast unload and reload cycles. The gun's mass on the "N" frame, means that the round is extremely comfortable to shoot and it is altogether a delight.
Gobango.net web site - see this picture and many more, plus articles.