This is not entirely true. While it results in a revolver that functions only as a single action, it does not result in the desired outcome described in my post above.
"But, to give you a brief summary, it's not about the trigger pull or weight, it's not about the lock time. It's about the much shorter arc of the hammer to bring it to full cock. If you have any familiarity with the Bullseye game, you know that 2/3rds of the match are conducted under timed or rapid fire constrictions. This means five well aimed shots at an X ring less than 2" in diameter at 25 yards within 20 seconds (timed fire) or 10 seconds (rapid fire). You must shoot with one hand, bring the sights back on target, cock the hammer, and squeeze off each shot one by one. Maintaining a consistent hold, with a consistent placement on the trigger is quite the feat of dexterity when you have to cock the hammer for each shot."
The orientation and geometry of the sear on the trigger and the notch in the hammer are totally different than the conventional trigger and hammer. That is why the two parts were sold together in the kit offered by S&W.
Again, the idea is to get the hammer to full cock at less than the degree of arc as typically seen.
Besides this being a characteristic the "short action single action" model 14, it was also a characteristic of the target conversion work performed by King Gun Sight on modified S&W and Colt target revolvers!