Has anyone tested these springs?

I'm currently trying to fix my TM HK 416 and found these springs for Tokyo Marui NGRS guns. I want to know if anyone has tried them before and if they actually work or not. I can barely find any information on them which is concerning. If anyone has used these before please let me know of your experience. Also yes I do know of the Eagle6 springs, but they are sold out everywhere so I'm looking for alternatives.

https://www.retroarms.com/aeg-springs/ngrs-spring-sicr-with-progressive-winding-m120