I don't think he is required to have a FFL to work on a stock or even a firearm for that matter. If he has a business than the business license would be in order per state and local laws.

Shipping is another matter. If he receives a firarms via a commercial shipper or USPS he should have a FFL. The laws are clear on this. Big brother is watching and the penalty can be servere. Why take a chance on a stay in the big house?

Jim

I've never met a bird dog I didn't like.