That's my question. What is your requirements for guns to attain the "reliable" status in the SMS mind.
Your question ignores my point that my definition, or your definition, of reliable is different and wholly useless when engaging in internet discussion over which guns are reliable and which aren't. And any definition of reliable is not universal across all "guns". A bolt gun is going to have a different standard than a semi-auto for example.
But, if you really just gotta know: For an AR platform that I planned to bet my life on, if I could take it up close to the sustained rate of fire, keep it there through a full combat load (210 or even 300), recharge and repeat without cleaning for at least two or three cycles (in succession on the same day) and then go out the next day and repeat the process, I might be comfortable with the rifle.
That extreme standard would be significantly lower for a hobby range gun.