Accused White House Correspondents’ Dinner gunman Cole Allen sent a sprawling, crazed manifesto to family members 10 minutes before Saturday’s attack, sources told The Post.

In the 1,052-word missive obtained by The Post Sunday morning — signed Cole ‘coldForce’ ‘Friendly Federal Assassin’ Allen” — and outlined his “rules of engagement” for the shooting and stated he believed it was his righteous duty to target administration officials.

Hello everybody!

So I may have given a lot of people a surprise today. Let me start off by apologizing to everyone whose trust I abused.

I apologize to my parents for saying I had an interview without specifying it was for “Most Wanted.”

I apologize to my colleagues and students for saying I had a personal emergency (by the time anyone reads this, I probably most certainly DO need to go to the ER, but can hardly call that not a self-inflicted status.)

I apologize to all of the people I traveled next to, all the workers who handled my luggage, and all the other non-targeted people at the hotel who I put in danger simply by being near.

I apologize to everyone who was abused and/or murdered before this, to all those who suffered before I was able to attempt this, to all who may still suffer after, regardless of my success or failure.

I don’t expect forgiveness, but if I could have seen any other way to get this close, I would have taken it. Again, my sincere apologies.

On to why I did any of this:

I am a citizen of the United States of America.

What my representatives do reflects on me.

And I am no longer willing to permit a pedophile, rapist, and traitor to coat my hands with his crimes.

What my representatives do reflects on me.

(Well, to be completely honest, I was no longer willing a long time ago, but this is the first real opportunity I’ve had to do something about it.)

While I’m discussing this, I’ll also go over my expected rules of engagement (probably in a terrible format, but I’m not military so too bad.)

Administration officials (not including Mr. Patel): they are targets, prioritized from highest-ranking to lowest

Secret Service: they are targets only if necessary, and to be incapacitated non-lethally if possible (aka, I hope they’re wearing body armor because center mass with shotguns messes up people who *aren’t*

Hotel Security: not targets if at all possible (aka unless they shoot at me)

Capitol Police: same as Hotel Security

National Guard: same as Hotel Security