Engineered for the Umarex Glock 17 Gen4 GBB platform, this licensed CO2 magazine delivers 18-round capacity with precision-built reliability. The metal construction features a secure magazine catch lock that minimizes gas loss and prevents accidental displacement during tactical operations. Optimized sealing and release mechanisms ensure consistent performance across extended play sessions. Ergonomic design facilitates rapid reloads, while robust engineering maintains stable operation under demanding conditions. Compatible with standard CO2 cartridges, this magazine represents the performance standard for serious airsoft operators seeking dependable feed reliability and gas efficiency.