From the workshop of Marine-73:

“Those waterslides on Thrasher were made and given to me by wry1 along time ago before I started printing my own. The lowers are a cast piece meant an Aliens colonial marine custom. i added the spikes that i cut off a random melee weapon I had in my fodder that ended up going to my dreadnok names Reaver I posted tonight also. As for which caster I got them from I believe it was raginspoon. “