I heard they are actually shipping.

I read a post by someone who recently received one. They are starting to show up.

I bought one last week and it will be here on Monday.

Where did you find one, tdwilli1?

The infamous Optics Planet still says it will ship in 9-19 days which is code for "We ain't got none."

Bob

Ordered off Sig's website. I probably caught it at the right time with them having stock.

Is it a faux pas to put a Sig Optic on a G48?

I'm not positive about this but I think the Zero is made by Shield. Should be good to go if it is.
I have two of the Shield red dots and they're my go to red dot. (Made in England) For thirty years they were only available for Brit military and special ops.
Great customer service via e-mail. The Zero seems like a Shield.
The Shield ones: just zero in. No other controls.
They adjust automatically to the atmosphere. I suspect the Zero's will be similar.
Probably worth waiting for.
Poli Viejo

My buddy with a Zero says it appears to be made by Shield. However it is manual adjustment as opposed to auto like the Shield. Dropped right on his XL and was close to being zeroed out of the box.