I've been involved with NFA weapons since 2006. I have never ever had anyone ask or demand to see my Form 1s or Form 4s. If a LEO asked, I'd probably show it to him. I have jumped through all the hoops with my NFA stuff, so I have no fear in showing it to a LEO. Its all legal. If a random person or range officer asked, it would all depend on my mood. To my knowledge the only person I MUST show the Form 1s/4s too is an ATF person.