M67 grenade (M67 Fragmentation Hand Grenade) is an American hand fragmentation grenade, since 1969 it has been adopted by the US Army. Designed to defeat manpower in combat. A grenade is delivered to the target due to its throw by a person’s hand. The body of the grenade is made of heavy metal, which is the fragmentation agent. Explosive Composition B is a fluid mixture of trinitrotoluene (TNT) and RDX (RDX). The standard composition of composition B is 59.5% RDX and 39.4% TNT with the addition of 1% paraffin. The final detonation velocity of this grenade explosive combination is 8050 m/s.