Cops who refuse to comply will be arrested by their fellow officers. I believe the 40% refusal rate cited by the OP is a wild overestimate.
Entire departments (sherrifs, say) who refuse to comply will be supplanted by staties or the National Guard, who are also sworn to state constitutions. Including state constitutions whose wording on RKBA might be very ambiguous. Governors will be careful to get the Guard into line before the trouble starts.
The federal .mil? Leaders won’t want their guys killed, and will likely try not to take sides.
Entire departments (sherrifs, say) who refuse to comply will be supplanted by staties or the National Guard, who are also sworn to state constitutions. Including state constitutions whose wording on RKBA might be very ambiguous. Governors will be careful to get the Guard into line before the trouble starts.
The federal .mil? Leaders won’t want their guys killed, and will likely try not to take sides.