Jaffa Staff Weapon (stargate)(k'nex)

this is the all so well known weapon of the bad guys in Stargate.
this weapon is known for the opening and closing of the head piece when firing.
this creation is about 6 feet long and as all of you know k'nex starts to bend when it gets longer.
So i decided after making this to make it into the shorter version known as the Sodan staff weapon.
plus it was hard to find a good place to put it.
this creation does have the open/close feature on the head piece.