Based on this product's specifications, here are some alternatives and similar models
Foam Gun Proline 5180131 — metal body for foaming and sealing applications
Summary description:
Proline foam gun (model 5180131) is a metal-bodied applicator designed for controlled dispensing of polyurethane foam for sealing, filling and mounting tasks. The tool provides a durable metal construction for workshop and on-site use, allowing accurate foam flow control and reliable connection to standard foam cans for insulation and installation jobs.