Monopod for WC mk3

There was a post on here a long time ago a guy had a mono pod on his wildcat. It was a diy job , with all this 3d printing being done does anyone know of one being sold, or you might have seen the one I’m speaking of on here , how was it done , last thing I wanna do is mess this gun up. Hey it’s a long shot, but without asking I’ll never know. Lol. Thanks 
 
I have a MK2 that I got used that has a well done one. I dont have the rod tho.



20201029_122523.1604030251.jpg