Not too long ago I ran across a 6.8M Inland m2 handstamp on GB. I did privately contact the seller because I thought it was the right thing to do -- I'd hate to see an uninformed person get pulled into serious legal/jail trouble over it. I do not pursue such things past a single notification. The shop immediately responded and thanked me, and ended the auction. Sometime after that, it was relisted as a parts kit and the receiver had been demilled.