Assault knife - one of the first type of halberds in medieval Europe. 
Was using for many decades very successfully and became an ancestor for many halberd types later.
This polearm has a good balance and low weight. 
Has fast attack speed and high accuracy. 
These kind of toys are very useful in formations in mass battles and duels.
Can be tricky and quick frag maker weapons in 5vs5 in arms of skilled halberdier.
High quality tempered spring steel.
Shafts can be made in different types of wood: beech / ash / composite with bamboo.