Every person I talk to "knows the law for sure" and quotes it different. I even called Tapco and spoke to them. They stated that the pistol grip counts as a U.S. part. I told them that the gun is not imported with a grip so adding one counts against it. The gentle man stated then that the grip is stamped U.S.A. so it is a mute point and it cancels itself out, you are back to zero. I told him Brownells is selling the part and advertising it as 2 922r compliance parts, which the Tapco spokesperson stated, "yes that is correct, counts as 2 compliance parts." WTF!