Board Thread:Warhammer 40k General Discussion/@comment-68.1.86.243-20131109055113/@comment-3580035-20131109090158

You cannot use a Halberd of Caliban with a Cyclone Missile Launcher, as it specifically states "replacing all weapons with the Halberd of Caliban". However, you can use the Missile Launcher with Lightning Claws.

Basically, you can pair it with Lightning Claws, Thunder Hammer/Storm Shield, or Storm Bolter/Power Fist/Chainfist