KJ Works 30rds Magazine for Tanio Koba Gas Blowback M4A1

KJ Works 30rds Magazine for Tanio Koba Gas Blowback M4A1 Standard spare magazine Constructed of Metal housing that is strong to drop on the floor 30 Rounds Loading Capacity Suitable for KJ Works M4A1 Series Airsoft Gas Blow Back GBB Rifle (Tanio Koba) Suitable for 6mm Plastic Bullet only