Google sent out an email to Google Adwords customers saying that they are going to pull all Google Shopping results for guns, what is ed ammunition, gun optics and gun accessories (Shopping results, not general search results).
HamLund Tactical received this email and posted it on 68forums.com (emphasis added) …
Dear Merchant,
We’re writing to let you know about some upcoming changes to the product listings you submit to Google. As we recently announced, we are starting to transition our shopping experience to a commercial model that builds on Product Listing Ads. This new shopping experience is called Google Shopping. As part of this transition, we’ll begin to enforce a set of new policies for Google Shopping in the coming weeks. A new list of the allowed, restricted, and prohibited products on Google Shopping is available on our new policy page.
Based on a review of the products you’re currently submitting, it appears that some of the content in your Merchant Center account, HamLund Tactical, will be affected by these policy changes. In particular we found that your products may violate the following policies:
Weapons-[source]
There is always http://www.lionseek.com/guns . It’s a new gun search engine that scans all of the for sale sections of popular gun forums.