So if I understand you correctly you are asking if is "OK" to ignore 922r for your personal build...right?
And you are asking this on a public forum expecting an answer?
It doesn't matter if is enforced or not, is still breaking the law. By posting it here you do not even have the excuse of not knowing any better (not that is a valid excuse anyways).
If they want you for something else...yes is enforced.
Your question is not much different than this "Is it OK to run a red light if I don't get caught"
I don't mean to be an ass about it but my answer is that the risk is not worth it!.