The witness is a BB gun, no rifling. Its not that they are better than the Umarex Colt, they are very different.

The Witness works in almost exactly the same way as the real 1911, the browning action is there, it field strips in exactly the same way and cycles correctly with each shot (Obviously without brass). The Pellet shooting 1911s that have a rifled barrel are basically a revolver dressed as an automatic.

They are tin can accurate, bb's are not for precision paper punching, but neither are most CO2 pellet guns.

If you want match accuracy looks elsewhere, but if you want a very nice representation of a 1911 that you can shoot informally in your own garden the Witness is excellent. And for the price it has to be one of the best value airguns available.