A firearm handguard is disclosed. The handguard comprises a first side section, a second side section coupled to the first side section by a plurality of interlocking fingers, and a bottom section coupled to the first side section and the second side section. The first side section and the second side section each contain at least one accessory mounting aperture. The first side section and the second side section are comprised of a polymer material having molded therein a reinforcement liner including at least one reinforcement aperture. The at least one accessory mounting aperture is aligned with the at least one reinforcement aperture.