I recently picked up a mr556 upper with the firing pin safety removed during while BCG was getting nitrde. I wanted to confirm proper location and reinstallation for the pins and spring for the firing pin safety.

MR556 Firing Pin Safety Question-img_0493-1-.jpg

MR556 Firing Pin Safety Question-img_0494.jpg

For reinstallation would it be setting the firing pin safety in against the spring tension and taping in the pins with a punch in the direction shown?

Appreciate any help or information that can be shared.