Abstract: A fencing system comprises a rail, a picket, and a picket carrier. The rail may include an upper contour, a first wall depending down from the upper contour, a second wall depending down from the upper contour and opposite the first wall, and a keeper disposed on the first wall under the upper contour. The picket may define therein an opening. The picket carrier may be elongated and may include a first side and an opposite second side, and a profile extending from the second side that defines a length along the picket carrier and may further define a cross-section. The cross-section may include an extension proximate to the second side and a holder distal to the second side. A first relief may be defined along the length and a second relief defined along the length, the second relief disposed apart from the first relief, with the holder of the profile that resides between the first and second reliefs extending into the opening.