Notes

It is believed that 2 per month is the capacity for the item, and it's not clear if the US is producing this amount per month. The source's wording seems to imply that after the upgrade to the production plant, the capacity will be 6-8 per month, rather than the implication that's the rate that it will be produced at. Unclear if the upgrade has been completed, so the projection capacity remains at 2 on this page for now.