The Badger Ordnance Condition One Trijicon RMR Waterproof Shim replaces the traditional heavy steel sealing plate provided by the manufacturer. It is meticulously crafted from an ultra-lightweight, high-performance Kapton material and features a pressure-sensitive adhesive layer on one side for immediate, permanent attachment. When applied beneath an open-bottom reflex sight, this thin, protective barrier establishes a reliable seal against water intrusion, dust, and moisture migration to maintain electrical conductivity on exposed battery contacts during harsh field operations.