Rocks
From BelegarthWiki
Description
A rock is a piece of open cell foam that is thrown by hand. A rock only does damage if it hits the head of a target, killing them instantly.
Rules
1.4.9. Class 5 Weapons have a minimum diameter of 4 inches and are constructed entirely of foam, cloth and tape (coreless).
3.2.2.5. Class 5 (Head only missile) cause 1 hit of Injury to an unarmored Head area. A Class 5 Weapon striking an Armored portion of the Head area causes no injury.