An upgrade kit for TF4: Age of Extinction movie deluxe Crosshairs. As an armorer and weapons master, Crosshairs' toys kit includes an add-on goggles (his favorite toy), an knife (his second favorite toy) & half dozen of grenades (his most favorite toy).
Note that the dynamite is extremely dangerous, so leave them to the weapon master, & only who qualified could gear them up (eg. Hound, Crosshairs). This is an easy, funky way to make your Crosshairs like an bad ass.
This kit have been test in Polished WSF & recommend.
Please find the following link if you want the explosive only: https://www.shapeways.com/model/2622119/