As close as I could get
https://www.brownells.com/schematics/Beretta-/686-Silver-Pigeon-Competition-sid894.aspx#r34sid894

Are you talking about part #34?

And if so, you know about part #33??

Two questions
One, have you tried metric allen wrenches?
Two, have you tried a TORQ wrench?
Mike

Last edited by skeettx; 11/16/16 03:44 PM.

USAF RET 1971-95 [Linked Image from jpgbox.com]