The dummy practice grenade of the present invention is particularly useful as a rifle grenade with a rifle having a fixed grenade launching sight such as a Yugoslavian M59/66 SKS Military rifle using 7.62×39 mm grenade launching cartridges, while exhibiting high accuracy during use as well as a rugged, structure which is useful for a large number of launches. The inventive grenade is also useful with other rifles such as the M1 Garand Military Rifle in 30-06 Caliber with a grenade launching attachment, grenade launching sight and grenade launching cartridges. The inventive dummy grenade is made of high density plastic such as polyethylene, and aluminum, and is weighted in the nose cone portion with lead shot so as to provide directional stability to the grenade during flight. The present invention is useful in combat training and in competitive events requiring target acquisition accuracy.