I don’t think the Mustang has a grip safety. With the full size 1911, you have the slide safety and the grip safety, so cocked and locked is pretty safe even if you dropped it or something. Plus, if the slide safety were to accidentally get released, you’d still have the grip safety for backup. One reason a lot of people like the Springfield XD over the Glock is that it has a grip safety.
Good point, no grip safety on the Mustang. Means it is not a 1911.