The M16A1 is an iconic gun, so it's no surprise that our favourite weapons designer Joerg Sprave fancied the idea of using one as the base of a crossbow. The result is rather terrifying.
This thing is, perhaps understandably, terrifyingly powerful — and unnervingly quiet. It fires with so much force that that it splits the shaft of the arrow as it hits Joerg's oak board. Watch the video to find out more.