No4 Mk2, what is the reinforce?

Which is the reinforce picture #1 or #2?

I thought I followed Peter's instructions the first time around,,,I was wrong..:(
I have read and reread and feel I have a grasp of what's needed I just can't I.D the reinforce of certain. Thanks....

#1
Attachment 58280
#2
Attachment 58281

Pic 1. The other is the breeching-up ring. The flat on the reinforce is the nocks form

Thank you Peter...