Angry Bull equips the Tokyo Marui MK23 SOCOM NBB pistol to use an M4 mag with the Airtac HPA M4 Mag Adapter... "I got lucky and managed to buy a pristine M4 adaptor for my TM Mk23, combined with a real TM mag and shiny new feed tube from Airtac this thing is going to be unstoppable! Watch as I put it together. Enjoy."