My dad worked with Bob Larson who owned Cascade Armory. Bob passed away from cancer 2 yrs ago and left everything to my dad. Bob was a gun smith and left tons of parts for fixing guns. My question is do you have to have an FFL to sell parts for guns. Not lowers oranything like that but parts to fix guns ALL types of guns. My dad has all these parts and worked with Bob for years but has no need for all of them. So are there rules for selling parts if you own them and want to sell them. I know this is kind of vauge and I will get more detals as to what the parts are but they are vast.