Raymond Kastner appeals his conviction for being a felon in possession of a firearm. See 18 U.S.C. § 922(g)(1). He argues that the evidence at trial was insufficient because his ex-wife, Christine Grinie, was not a credible witness. This court’s review for sufficiency of the evidence is not concerned with the credibility of witnesses or the weight of the evidence, which is the exclusive province of the jury. United States v. Garcia, 995 F.2d 556, 561 (5th Cir. 1993). Moreover, given the evidence at trial, Kastner has not shown that his conviction resulted in a manifest miscarriage of justice. See United States v. Thomas, 12 F.3d 1350, 1358 (5th Cir. 1994).

AFFIRMED.