Yes, what Troy said....
Especially if this forum was 1022.com or Mini14.com.
Being that it isnt, and that you PROBABLY know that its mostly AR stuff, I ASSUMED you were talking about a pre-ban AR of which you have the RECEIPT that shows it was purchased as an AW.
That should explain my simple answers.
[Surprised mode on]
TROY, you posted.... "In order for a rifle to be a grandfathered "assault weapon", it had to be either one of the guns banned by name, or it had to have been in "AW" configuration on or before 9/13/94. If the latter is true, then adding or removing AW features is fine as long as the gun always contains enough features to be considered an AW."
The second part of your paragraph """adding or removing AW features is fine as long as the gun [red]always contains enough features to be considered an AW[/red].""" Makes absolutely no sense at all and I have NEVER heard (or read any law)that it is a NO-NO to remove AW features to the point that a firearm is no longer an aw.
Because that statement is so backwards, I will ASSUME (because you are a moderator in a forum that deals with a LOT of AR/AW issues) that you did not mean to write it the way it reads.
[surprised mode off]
That said, you can add or remove as many features as you want, as long as you stay within the law (which means don't make it into an NFA weapon). Most states that would allow a pre-ban AR, would allow you do almost anything with it. (again, don't make it into an NFA weapon).
Also, Does anyone know whats-up with Michigan having an 18" barrel law, instead of a 16" law? I know that UZIs fall under that law, but what about ARs?