Just as a point of order, as they say; if you return the firearm to non-NFA configuration (16” barrel, or remove the stock) it can be sold without any other requirements. You do not need to remove the firearm from the registry.
This is a SAM7SFK-80 rifle that had the Gambit (barrel extension/flash hider) removed. You can see it laying in the box. Not a “factory SBR”, but you can see the intention.
This is a SAM7SFK-80 rifle that had the Gambit (barrel extension/flash hider) removed. You can see it laying in the box. Not a “factory SBR”, but you can see the intention.