The APM-1, APM-2, APM-3, APM 19, and APM 29 are Austrian directional fragmentation mines similar to the U.S. Claymore mine. The mine's cases are made from moulded plastic have convex faces. They contain a matrix of 5 millimeter diameter steel balls weighing 0.5 grams laid over a Composition B charge. When triggered the mines project the fragments in a horizontal arc of approximately 60 degrees. The mines can be command or tripwire activated, and can be fitted with a time delay fuze ranging from one minute to twenty four hours.