I understand the issue with receiver-cover mounted peep sights and the cover moving around.  I understand the Krink addresses this by hinging the receiver cover to the trunnion.  I'm building a krink kit on a milled receiver and what I'd like to do is remove the rear sight, weld/solder on a picatinny rail and fit an AR or HK type rear sight on the back of the receiver cover.  Anyone ever done this or have any pics of it?  Thanks for any thoughts.