The RGM-79SC GM Sniper Custom is a fictional Earth Federation Forces mobile suit from Mobile Suit Variations (MSV) within the Gundam universe. It is a long-range support and reconnaissance variant of the standard GM, equipped for precision sniping and battlefield observation. Rather than a single character, it functions as a mechanical unit often featured in side stories, model kits, and technical lore. Its role is to provide close support from a distance, eliminating enemy targets with accuracy.