The King Cobra is the same guts as the Trooper Mk V, which were an upgrade over the Mk III guns. (as I understand it... I'm just not much of a Colt guy)
I have a six inch stainless King Cobra and it's a gorgeous gun and is solid all around, it seems to ooze "quality" and "durability" in it's feel and the sounds it makes as you open & close the cylinder.
One thing I have witnessed is the meteoric rise in prices of these revolvers. We've all seen what happened to the Python's prices, we've seen the Diamondback revolvers go the same route and the truth is that the King Cobras are doing the same thing.
NO, these revolvers are not like the Python & Diamondback... they are more "modern" and less "fitted" on the inside. But I'm almost in awe of some of the prices I see on the King Cobras.
These guns were a direct competitor to the 586 and 686 back in the 1980s and early 90s. I don't recall for certain, but the price was similar. These days, even a
very nice 686 typically doesn't wander far north of $600 or $700, but you can't touch a King Cobra for that money anywhere I'm looking.
My gun? The single action pull is terrific, as expected, but the double action is quite heavy and, well, I've got a lifetime of shooting behind Smith & Wesson double action revolvers, so mine is more part of my "collection" and an occasional shooter. But it is one fine looking revolver.