Weapon Group (Slings and Thrown Weapon

(Unearthed Arcana, page 97, DnD 3.5)

[General]

You understand how to use slings and handheld thrown weapons.

Benefit

You make attack rolls with the following weapons normally: dart and sling.

Normal

When using a weapon with which you are not profi - cient, you take a -4 penalty on attack rolls.