[1] The mine is square with an olive drab body[2] constructed from polythene with a webbing carrying handle[3] on the side and an ammonia-free bakelite seating for the pressure plate to be screwed into.
The cylindrical pressure plate consists of two plastic plates, one of which moves under the weight of a vehicle driving over the mine to transmit the force to the fuze,[2] shearing pins which hold it in place.
[3] The PRB M3A1 variant has two secondary fuze wells, and is often deployed with a M30 anti-lift device.
[3] The mines are prone to sympathetic detonation if laid closer together than 2 m. The mine is found in Angola, Chad, Eritrea, Ethiopia, Iraq, Lebanon, Libya,[1] Mali, Rwanda, Somalia, Sudan, the Western Sahara, and Zambia.
[1] The Libyan National Transitional Council subsequently issued a communique promising to stop using anti-personnel and anti-vehicle landmines, and that their forces will be requested to destroy all stocks of landmines.