Italian WWII Model 35 OTO Grenade

The O.T.O. is the simplest of the three Mod.35 Types. The Allways fuze is driven by a lead ball held between a cone shaped cap and a spring loaded striker. For added fragmentation effect the ball is actually a lead-wrapped assembly of small lead shot, intended to rupture at the moment of detonation, scattering the pellets. The internal capsule contains the explosive and a primer/detonator tube. A thin wire ring locks the two body halves together at a specific place, fixing the overall length, so as not to bind the internal parts.