Thanks for posting those letters. It helps to illustrate a few key points.
I think the take away lessons from this are:
1. The extended tube alone IS a violation of the law.
a) this is not changed by wide spread ignorance of the law
2. What is required for 922(r) compliance is unclear.
a) You definitely need 10 or fewer foreign parts from the list of countable parts
b) The ATF has given differing interpretations of how many countable parts the M4 has. That means it is unclear how many you need to remove (typically this means replacing them with a US made part) in order to be in the clear.
3. Better safe than sorry
a) the ATF is probably not going to kick down your door tomorrow. Many in law enforcement are not even aware of the violation. They do not seem to be actively seeking out instances of this violation to prosecute (at least not right now).
b) You could be prosecuted though, it could be because you somehow attracted attention to yourself or simply because some guy beyond a desk somewhere decides he wants to start going after this. Should you be prosecuted it would be costly at best and a nightmare at worst.
I think this has been a useful thread. People need to make their own choices about what they do, but they ought to make them with a knowledge as to what the facts are.
I think the take away lessons from this are:
1. The extended tube alone IS a violation of the law.
a) this is not changed by wide spread ignorance of the law
2. What is required for 922(r) compliance is unclear.
a) You definitely need 10 or fewer foreign parts from the list of countable parts
b) The ATF has given differing interpretations of how many countable parts the M4 has. That means it is unclear how many you need to remove (typically this means replacing them with a US made part) in order to be in the clear.
3. Better safe than sorry
a) the ATF is probably not going to kick down your door tomorrow. Many in law enforcement are not even aware of the violation. They do not seem to be actively seeking out instances of this violation to prosecute (at least not right now).
b) You could be prosecuted though, it could be because you somehow attracted attention to yourself or simply because some guy beyond a desk somewhere decides he wants to start going after this. Should you be prosecuted it would be costly at best and a nightmare at worst.
I think this has been a useful thread. People need to make their own choices about what they do, but they ought to make them with a knowledge as to what the facts are.