Gammel Knecht got a Golden Eagle M4 MC6589M 12.5" GBB from Sniper-AS and shares what he thinks about it. The Golden Eagle M4 MC6589M GBB is made entirely of metal, it boasts a realistic weight and feel thanks to its gas blowback system that delivers a powerful recoil for an immersive shooting experience. The M-Lok RIS Handguard allows for extensive customization with various attachments like rifle scopes, grips, and tactical flashlights, ensuring you can adapt the rifle to your specific needs.