Ordering precisely the right parts—the exact rail and the retaining screw—was the only challenging part of this repair. But AppliancePartsPros experts helped me identify the exact match in almost no time, the assistance could not have been better: and the parts were shipped the same day.
When they arrived, I believe I took a total of less than five minutes—lift out the hooked-in glass bin top, hook the new rail into position, screw in the single screw to secure the rail, hook the glass bin top back into its position in the refrigerator, and slide the meat bin back into its position. Only one tool required: a stubby #2 Phillips head screwdriver.