This safety notification applies to certain firearms manufactured between April 1, 2016 and March 3, 2017. In a few cases, a double fire condition has occurred with a single pull of the trigger.
This conclusion from CDC is unsurprising to anyone who has, unlike ARS, actually used a firearm equipped with a suppressor.
From Winchester: DO NOT USE WINCHESTER® M*22™ 22 Long Rifle RIMFIRE AMMUNITION WITH LOT NUMBERS GD42L or GD52L.
"...a Safety Alert relating to the lower trigger on M&P Shield pistols."