From yesterday's unpublished U.S. v. Gilbert (some paragraph breaks added):

Keith Gilbert appeals his jury conviction on one count of conspiracy to manufacture unregistered firearms ..., one count of being a felon in possession of a firearm ..., seven counts of possession of a machinegun ..., and two counts of possession of an unregistered firearm ....

At trial, Gilbert admitted to participating in each of the four controlled purchases and testified that he knew the buyer was acting as an informant. Gilbert maintains that he sold the guns to the informant intentionally, to challenge the constitutionality of firearms laws. Gilbert attempted several times to testify, twice successfully, that he believed the Second Amendment gave an individual the right to bear arms. Each time, the court sustained government counsel's objections and instructed the jury to disregard Gilbert's answers.

The court also denied Gilbert's request for an additional jury instruction to the effect that the Second Amendment affords an individual right to possess firearms for personal use. The final jury instructions included, at the government's request, the following instruction:

A person does not have the right under the Second Amendment, or under any other provision of the Constitution, to possess a machinegun. A person does not have a right, under the Second Amendment, or under any other provision of the Constitution, to possess a rifle with a barrel shorter than 16 inches that the person has not registered in the National Firearms Registration and Transfer Record.

... The district court's instructions were particularly appropriate to rebut inferences created by Gilbert's counsel's statements that Gilbert believed the Second Amendment allowed him to possess, sell, and manufacture firearms, Gilbert's stricken statements about his beliefs regarding the Second Amendment, and his statement that he was challenging the constitutionality of the law.

The Supreme Court's recent decision in District of Columbia v. Heller, holding that the Second Amendment protects a limited individual right to possess a firearm -- unconnected with service in a militia -- does not alter our conclusion. Under Heller, individuals still do not have the right to possess machineguns or short-barreled rifles, as Gilbert did, and convicted felons, such as Gilbert, do not have the right to possess any firearms....

Gilbert also argues that the district court erred by preventing him from testifying as to his understanding and beliefs concerning the Second Amendment.... [T]he charges against Gilbert did not require, as an element of proof, evidence that Gilbert knowingly broke the law, only that he knowingly possessed weapons and knew the characteristics of those weapons. The only elements of proof which required inquiry into Gilbert's mental state were met: the government proved that Gilbert joined the conspiracy knowing its object and intending to accomplish it, and that he knowingly possessed machineguns and a rifle with a barrel less than 16 inches in length.

Thus we conclude that the district court acted well within its discretion to exclude Gilbert's testimony regarding his beliefs about the Second Amendment as inadmissible [as irrelevant]. For the same reason, we conclude that the district court's exclusion of Gilbert's testimony did not violate his right to present a witness in his own defense.

Whatever one might think about what D.C. v. Heller should have said about these issues (and I'm inclined to approve of its conclusions on them), it seems to me the Ninth Circuit read and applied Heller quite correctly.