Any Replacement Sheaths? RAT-7 Knife

Are there any custom nylon makers, or available aftermarket sheaths for the Randall’s Adventure Training knives?

Just got one yesterday from my brother, and the sheath is an absolute joke.

I’d like to get something similar to Spec-Ops Combat Master, but I’m not 100% on a fit. On paper, it should fit, and I’ve personally measured the blade to verify, but I wanted to feel out anyone who may have purchased an aftermarket sheath for their blade.