The NUPROL M4 Magazine Folded Metal v2 EXT AEG Mid-Cap 200R is a high-capacity mid-cap magazine designed for airsoft M4/AR-15 series replicas. It combines the durability of a traditional metal casing with the silent operation typical of mid-cap magazines. 
 
 
Key Specifications and Features
Capacity: 200 rounds, which is roughly 30% more than standard mid-cap magazines.
Construction: Features a realistic stamped metal alloy casing with durable polymer internals.
Design: Part of NUPROL’s "EXT" (Extended) series, often slightly longer than standard mags to accommodate the higher round count.
Stealth Operation: Uses a spring-fed system that eliminates "battle rattle" (noise from loose BBs) and does not require winding like hi-cap magazines.
Compatibility: Designed for standard STANAG-accepting AEG and HPA airsoft weapons. Compatible with brands like Tokyo Marui, G&G, WE, Classic Army, G&P, and CYMA.