Flint-locks are very sophisticated devices and all parts must be in harmony for good performance.
A factory made lock like the Ped. needs to be tuned for any kind of real performance. Not hard for someone with a little experience.
The difficult part is hardening the frizzen. Again not real difficult after you learn how. But almost all factory made flint-locks do have soft frizzens. Out of the box do not expect good sparking, if any at all.
However, what Ped. ships is not always consistent. You might get lucky and get one that actually sparks.