MAG VN-Style 130rd Mid-Cap Magazine for M4 / M16 Series Airsoft AEG Style:Single Just one spring: and it's

Just one spring: and it's in trigger valve

Premium Grade construction with thicker shell

Outer Barrel and Frame

Compatible with KJW KP13s

MAG VN-Style 130rd Mid-Cap Magazine for M4 / M16 Series Airsoft AEG Style:Single Just one spring: and it'sFeatures Precision feeding, better than hi cap magazines Stealth operation; no rattling sounds Great compatibility with major brand AEG rifles Lightweight construction makes it easy to carry multiple magazines Mag pouch and dump pouch friendly Compatibility: Works with Tokyo Marui, G&P, EMG, G&G, Krytac, KWA, Elite Force, and other compatible M4 M16 series Airsoft AEG rifles Capacity: 130 rounds Material: ABS Polymer Manufacturer: MAG