As the title suggests, what do I need?

I want to install a Surefire Procomp on it. The threading is the same. I know I'll need a crush washer to index the brake (which I believe it comes with).

What sort of clamping do I need to prevent damage to the barrel? What sort of torque should I expect to use?

I've heard the Ruger birdcage is really on there. I was thinking since it has no flats that I could just stick some covered dowels through the cage and wrench it off. But I don't want to remove it if I am not going to install the brake.

Am I overlooking anything?

I really appreciate any input.

-Zach