installing the Disassembly Bar (DB) item #25. Looking down into the frame you will notice a counterbored hole just forward of the Internal Locking System. Place the DB Spring & Stop item #26 & 27 into that hole. From the left side of the frame insert the DB into that hole while doing that push in on the DB Stop so the DB will clear the stop. Rotate the DB until you hear the stop snap into place on the DB.