From ebay General Announcements:
July 30, 2007 | 10:00AM
PST/PT

Hello everyone…In mid-August, we will be updating our Firearms,
Weapons and Knives Policy to place more restrictions around
gun-related items. Once these changes take effect, we will prohibit
listings of any firearm part that is required for the firing of a
gun. This includes items like bullet tips, brass casings and shells,
barrels, slides, cylinders, magazines, firing pins, trigger
assemblies, etc. Please read the Firearms,
Weapons and Knives Policy for more details on our current
policy.
As you may know, eBay does not allow the listing of any items
which are regulated by individual states or the federal government;
however, there are still a large number of firearm-related parts
that are legal and are widely available in retail stores. These
items have also historically been allowed on eBay.
After learning that some items purchased on eBay may have been
used in the tragedy at Virginia Tech in April 2007, we felt that
revisiting our policies was not only necessary, but the right thing
to do. After much consideration, the Trust & Safety policy team
– along with our executive leaders at eBay Inc. – have made the
decision to further restrict more of these items than federal and
state regulations require.
This new update continues to encourage safety among our community
members and brings our policies in the U.S. and Canada in closer
alignment with our existing policies in other markets around the
globe.
Sincerely,
Matt Halprin
Vice President, Trust & Safety