Nishimura decides it is time to maintain their CA870 airgun after neglecting it for about three years. The motivation for this sudden productivity comes from a noticeable drop in power and a trajectory that has become quite unpredictable. To fix these issues, a new hop-up rubber and a fresh spring are prepared for installation, with a goal to return the equipment to its former functional state.

For owners of the Maruzen CA870 Airsoft Shotgun, Nishimura put together this video as a helpful guide in doing maintenance or repairs... "Hello, this is Nishimura. This video explains how to disassemble and maintain the CA870. For reference of spring replacement and hop packing replacement such as Nonbain.

Required tools: