Based on this product's specifications, here are some alternatives and similar models
Lamp adapter Type A — Ledlenser 502248, compatible with select Ledlenser lamps
Summary description:
Lamp adapter Type A (model 502248) by Ledlenser is an accessory designed to mount or adapt compatible Ledlenser lamps. This adapter provides a secure mechanical and electrical interface for fitting specific lamp heads, enabling use with various mounting systems or accessories supplied by the manufacturer. Suitable for replacement or accessory expansion where original adapter compatibility is required.