This is the Russian RGD-5 (РГД-5), Granata Distantsionnaya, Distance-Hand-Grenade or Time-Delayed (DLY) hand-grenade, a post World War 2, High-Explosive-Fragmentation (HE-Frag), Anti-Personnel (AP), defensive, hand-grenade, designed in the early 1950s, also made in...
