When stopping on a qaaf which has shaddah, do you pronounce it as two qaafs or as one?

Question
Assalamu 'Alaikum,
When stopping on a qaaf which has shaddah, do you pronounce it as two qaafs or as one?
Answer
Wa alaikum assalaam wa rahmatullahi wa barakaktuh,
You pronounce it as two qaafs but without separating them with any type of pause.  The first of the two is pronounced  as a sukoon (no vowel) with collision of the two parts of articulation without any qalqalah, the second is pronounced with the vowel on the shaddah. 
If this qaaf with a shaddah is the last letter of the word and we are stopping on it, the second qaaf will have a qalqalah when stopping on it.
Aameen and may Allah give you the same and more.