Special situation, special application.

And the SD subseries was developed becuase various special customers were finding that the best muzzle cans in the world still opened the groups up too much. H&K has excellent engineers, and an excellent marketing department. They gave the customers what they wanted. <img src="/images/graemlins/smile.gif" alt="" />

Personally, I'm not so much the sneaky. That word can't be used to describe anyone who says "car bombs are subtle".