Obsidian Defense

Meh... As a FFL this doesn't really worry me for a few reasons:

1. A roster of what is purchased is never sent. They don't know what exactly was purchased, only a dollar amount.
People regularly buy bulk targets and other accessories. A dollar amount by itself is meaningless.

2. There is literally a code for every other type of business that you can imagine. My background is software engineering, I worked in payment system integrations for a large part of my career. When I started my FFL and signed up for merchant account services, I was actually pretty surprised that codes for gun shops didn't already exist (which leads to the third point)...

3. Most gun shops are currently categorized as "sporting goods" retailers. The average Bass Pro Shop (and other big box retailers) sell more guns than the average gun shop...by a LOT. They still sell WAY more sporting goods though, so their current merchant code will stay the same.

All of the above eliminates any effective means of isolating anomalies in firearm & ammunition purchases, which is the supposed "goal" Amalgamated Bank has in mind for the new codes.