The paint you mentioned might work for a while, but its really made for aluminum frames, and if yours is Compact (safety, not a decocker) you'll do better using matte black auto touch-up paint. (That touch-up paint would work with aluminum, too, and it's an almost-perfect color match for the CZ black polycoat finish.
I've found that Dupli-Color is a perfect match, but MOST matte black auto touchup paint is almost identical to the Dupli-Color.
I've used the larger spray can version, and if you mask off most of the area around the damaged area, you can lightly spray it, and the repair might be almost invisible. You just have spray a very light coat (or coats) over the damaged areas.
For small chips or scratches, I spray a little paint onto a piece of aluminum foil or waxed paper, and then use a fine modeler's paint brush dabbed in that sprayed paint to fill in the chip or scratch. The spray paint is THINNER than the paint that comes in the applicator bottles, and the spray paint (even when using a brush) gives you a easier-to-manage process. (You can add more with the paint brush to get the surface even, but the thicker paint makes it harder to apply just a little.