In certain embodiments, a fence system includes a rail having a first surface having one or more apertures. The rail also includes second and third surfaces opposing one another, the first, second, and third surfaces of the rail forming a channel. The second surface and the third surface of the rail have first and second lips, respectively, the first and second lips extending into the channel. The fence system section also includes one or more pickets inserted through corresponding apertures of the first surface of the rail. Each picket has a first connection region located substantially in the channel formed by the first, second, and third surfaces of the rail such that the first connection region is substantially prevented from passing through the corresponding aperture in the first surface of the rail or between the opening defined by the first and second lips of the rail.