Hi folks, I have a very simple question, am I damaging my AR 15 by shooting rounds through it as fast I can pull the trigger. The owners manual doesn't mention anything about this. One person told me too fast is not good, another person told me I can't damage it. What do you think?

Type DPMS 5.56 16 inch barrel 1x9 twist
I use 55gr bullets only.

Thanks for the help