Sorry about that guys. The MR5 kits are popular; we made what we thought would last us through our production shop move (going on now) and sold out of them 2 weeks ago. So much for inventory planning. MR10s I will check on, I was surprised to see that sku at zero. I will double check that they are actually all gone.
Will the 18" versions work for either of you? We have some of each of them; they are the ones have have sold out first in the past.
To answer the question though, both probably won't be back for a few weeks at least.
We're also working on a new website upgrade that will automatically email (or text) you when something comes back in stock so you won't miss it in the future. Hope that helps you.
Justin