FPF filed an amicus brief at the Fifth Circuit in the case of Hollis v. Lynch arguing (1) that Heller affirmed, and did not render meaningless, the prefatory clause of the Second Amendment, (2) that the appellant should be entitled to a trial under United States v. Miller, (3) that the government has not proven that the M-16 at issue is an uncommon, dangerous and unusual weapon, (4) that the M-16 style service rifle appellant wishes to manufacture and possess may be in common use, and (5) that the M-16 style service rifle may not be a “dangerous and unusual” weapon.