Ask a glock dealer or armorer, Im not sure you can keep the video but its an advertising video where they drop the glock (i dont know how high up it was) then shoot a ton of rounds through it to show it still works and its accuracy, then I think they put it in a block of ice, and run it through some mud, and the thing still shoots accurately.
I won a pistol at the glock match I went to and I think the next glock I get is going to be a G34, the 9 mm made for the ipsc matches, I want to make a unlimited gun for the matches with a red dot scope on it.