Not at all, but I need to pass to my local training buddy first (we both bought 15-22s during the last ammo shortage), and that might take a bit.
That said, all I did was send an email to qa@smith-wesson.com titled "M&P® 15-22 Bolt Inspection Gauge" and wrote
"I would like to order a M&P® 15-22 Bolt Inspection Gauge to inspect my rifle (Serial Number ABC1234).
Please send the gauge to..."
...and it was in my mailbox five days later.
"When the phone rang, Parker was in the garage, killing a man."