I'm sure it would be implemented as a period of time that citizens had to turn in their weapons, after which very high penalties would be imposed for possession.
They wouldn't assume 100% compliance, they would just be happy with the 75% compliance they did get and the knowledge that the other weapons would be collected (and owners punished) over time.
It would all be very low key.
>> It would all be very low key.
Not if (say) Gov. Perry publicly proclaimed that the executive order wouldn’t be enforced in Texas, and that no Federal gun collection points would be allowed within the borders of Texas.
That would bring things to a head pretty quickly, in a very high-profile way, don’t you think?