Metal M4 300 Round High Capacity Magazine For JG, Dboys, G&G, ASG, CYMA, Echo 1, VFC AEGs

This is a 300 round high capacity magazine for M4/M16 Metal Gearbox AEGs. It is full metal and compatible with most brands including: Dboys JG CYMA G&G A&K Elite Force ARES VFC KWA AGM ASG Classic Army Cybergun Echo 1 G&P ICS King Arms Krytac Lancer Tactical (Gen 1 Only) Valken