Senmin Sisou Salamander M4 Magazine Adapter for Marui, CYMA, Golden Eagle Both Gas & Air Cocking Shotguns
 
Polymer construction.
Allow user to use M4 Magazines on their TM system shotgun.
Suitable for Tokyo Marui system SPAS 12 / M3 / M870 Shotgun Series.
Spacer for adapting each models not be included, suggest using 3D printed or cut the model plastic plate to suit these