Denmark is getting smelly
Something stinks in Denmark. Unless this person is as uninformed as they come, under no situation should you even consider selling that pistol for a Glock. I have a Glock 20C that I really like, however, I MUCH rather have that Hi-Power. If you are actually un-informed about handguns, educate yourself BEFORE you trade it or sell it.
The next time someone asks you " What do you know ? " Respond with a smile and say " A frogs ass is water-tight."