PotP Battletrap Upgrades Updated: 25/09/18 PotP Battletrap Upgrades consist of a Missile Launcher for PotP Battleslash and a Blaster for PotP Roadtrap. Missile Launcher and Blaster attach in Robot, Vehicle and Combined Modes. Designed for use with 5mm-compatible figures. Get the PotP Battletrap Upgrades on Shapeways! PotP Battleslash Missile Launcher PotP Roadtrap Blaster 25/09/18: Release
It's designed mainly with Battletrap in mind, so yes it's a bit on the big side for Battleslash on its own.