Everything I've read suggest that the RATs TQ is a decent TQ and that it is combat proven. Will it provide as much pressure as a CAT style TQ with the twist lever? Probably not but its also more compact than a CAT TQ and I'd rather have a TQ than having to tear a shirt or something to use.
Also I'm not a doctor or medic but isnt it possible to apply a tourniquet too tight?
With any tourniquet, you tighten until the bleeding stops, so yes there can be a “too tight” to where you unnecessarily damage the tissue and increase the likelihood of amputation, but if applied properly, that won’t happen.
RATS tourniquets compress a much smaller surface area versus a CAT or SOFT-T. More likely to kill the surrounding tissue. They are a PITA to get tight when covered in blood and become very slippery, not a good situation for self application. They are nearly impossible to adjust (tighten or loosen) once applied without basically having to start over. “Combat proven” maybe a decade + ago. There are better options out there. We’ve used CATs for years in the military and current wilderness and TCCC classes if you find one are worth the money to do some hands on and test out the different options out there.
Not trying to tell anyone to not buy one, but they are exceptionally inferior to what is standard with current technology and not TCCC approved.