I don't know, but this optic may be (or in the process of becoming) discontinued. If that's the case, the supply will dry up. A shame, since it is a very rugged optic and can be quite useful. I was knocking off 1/2" groups at 25 yards easily, and killing clay pigeons offhand in rapid fire at the same range. That little bit of magnification helps more than you'd think.
Depending on circumstances, it may be possible to talk me into parting with my ML2 2x if your heart's set on one. It's not on the EE, and I'm not trying to violate the CoC by mentioning this - feel free to contact me offline by email or IM. You could check eBay, but I saw one go for over $500 a while ago.