Bangstikks are long poles with explosives strapped to the end. Used exclusively while mounted on a boar, they are not the most precise of weapons as they are woefully unbalanced. The bangstikk is used just like a krak grenade to attack vehicles and bunkers. However, bangstikks double the D6 roll for penetrating armour, giving them an Armour Penetration of 6+(D6x2).
Bangstikk
Source: Chapter Approved: Feral Ork Warband, p. 3