Glitch with the grunt fineral skull

Hi, I found out that if you kill grunts with the grunt funeral skull on their weapon will disappear (just like their body)…so is this a glitch or is this intended?

I’m pretty sure its intended. its kinda disappointing because I’ve only managed to pick up a needler once since I started playing. Oh well.

It’s intentional, BTW, you spelled “funeral” wrong.