The Civilian Marksmanship Program sent out an ammunition update earlier today:
AMMO: The CMP does not have any caliber .223, .22LR, or .30 carbine ammo for sale at either store. We are sold out and expect to receive shipments of these calibers in 3-6 months. We continue to accept orders for these calibers and will fill those orders when we receive the replenishment shipments from the manufacturers. We do have caliber .30-06 ammo at both stores, but a 10 can purchase limit per year per customer applies. We also still have the Atomic caliber .308, but expect to run out in the next 60 days.