The British Military Open Encyclopedia - ARRSE-Pedia. Back to British Army Rumour Service Home
66mm Light Anti-Tank Weapon.
US manufactured one-shot disposable unit. Most famously used by Michael Douglas in "Falling Down", where by means of a particularly spectacular ND, he manages to seriously put the shits up some Spam Navvies. Either referred to as the 'Law' or usually just the '66'.
More here: 66 LAW
See Also Drill LAW