Yes, the "d" on the end on the end of "mand" applys a "stød" or the glottal stop. So the word ends abruptly instead of being dragged on. Its the same in "hun" and "hund".
To my knowledge we don't have the glottal stop in English, but an example is when spelling "be" its b' e' there's a cut off between the letters.
I'm a native speaker English but this is what I've learned so far, hope it helps!