Just email them and you'll find out. Maybe I'm just used to good service and don't tolerate indifferent vendors. I emailed them twice, both times was told to email back. That may not sound much, here's what I've gathered:
1. They don't care if you buy from them or not, otherwise they'd contact YOU when the mounts are available again.
2. They probably think they're the only game in town, such service is the manifestation of their arrogance and assumption that nobody else makes it.
3. Other than paying taxes, when was the last time you had to put forth much effort to pay someone and give them your business?
To think companies with bad services are usually good at the sales level and their customer service isn't as good after the sale, now we got a vendor that sucks at sales, just imagine if you ever have to call them for questions, returns and repairs.
If they don't give a crap whether you buy from them or not, why then would they care to make sure you're happy with the product? I for one will not reward inept vendors. Companies like MSTN, Bushmaster and many others treat their customers like they're the only customers they have, and I will continue to give them my hard earned money.