All the wedges {keys} on my rifles are "captured" and the pin is easily removed. A 1/16" wide slot centered in the wedge width is made w/ the bulk of the mat'l taken out w/ a jeweler's saw and then filed smooth. The .050 dia. pin is cut from a large paper clip. The pin can be inletted under the screw retained escutcheon or a slightly oversize hole is drilled down from the oblique flat of the bbl inlet if the escutcheon is permanently pinned. In either case, the slot is long enough for the head to hit home and the lead end to clear the bbl lug when retracted. Easy enough job and no lost wedges. That's why my wedges aren't fit that tight and are easily retracted w/ my fingernails.....Fred