Dusty Stevens
Shiner
It is kinda weird you didnt know about this:Where have you seen this? I've not seen a single report of ARs and 5.56 being sent there. Why would anyone, and why would they want them? Ukraine as a former Sovbloc country has retained AK series rifles, Soviet designed machine guns and their 7.62X39 and 7.62X54R cartridges, plus 12.7mm etc. I've no doubt, some AR types and/or 7.62 DMR rifles have been sent for use by Ukraine's special forces, but not in numbers for the majority of forces.
Your own NT Times reports that Ukraine is desperately seeking AKs and ammunition for them. Finland (a user of an AK based rifle system) is helping out it's reported, and the US government and other Nato countries are trying to find surplus AKs in suitable quantities worldwide to buy and supply, but with considerable difficulty.
If Nammo Oy is supplying large amounts of 7.62X39 / X53R, which Lapua is tooled up to make in quantity, this may of course be the reason for the suspension of production of other types of case. It won't account in the slightest degree though for any shortages of 223/5.56 or any other cartridge in the US. After all, the great and ongoing shortages of both ammo and components long predate 24.02.2022 when Putin's 'special military operation' commenced.

AMMO Inc. To Donate One Million Rounds of 5.56 Ammo To Ukraine - The Truth About Guns
Joe Biden’s so-called diplomacy with Russia to avert an invasion of Ukraine didn’t really work out. Not even a day after Kamala Harris flexed her diplomatic muscles, Russian troops rolled over the border. When Biden offered the Ukrainian president safe passage out of the country, he declined the...


Biden Looks to Cut Consumer 5.56 Ammo Supply (while Sending 50 Million Rounds to Ukraine) :: Guns.com
Reports surfaced this week that the White House is leaning on the contractor operating the only government-owned small arms ammo plant to halt sales of surplus 5.56 rounds to the public.
