Receiver cover RIS/Weaver rail for Sa vz. 58 with designer cuts from the manufacturer Retro ARMS. Designed for guns Sa vz. 58 e.g. Hermex CZH 2003 CZ 858 Tactical, Gazelle.. Probably the cheapest and highly reliable system for mounting optical sights (scopes, red dots, etc.) on your weapon. The body casing itself is made of duralumin EN AW, 2007. The surface is sanded with fine glassrd and black-matt anodized.