GHK M4 Gas Blowback Rifle (14.5?)

GHK M4 Gas Blowback Rifle (14.5?) - New HOP-UP system, ver 6.0 hammer, and stable bolt lock - Steel made bolt carrier & CNC fishbone rail - The main receiver is made of aluminum die-casting which is high precision providing stability and strength - The stock is strong and not easily broken - The bolt is finished in a impact-resistant material with a German made connection spring. It is flexible, not easy to break, but is easy to remove and maintain Gas effeciency is good due to high airtight characteristics - The OEM Montblanc barrel has high detail heat pattern. Steel thin-walled, light weight, and hollow center, the whole process of producing barrel is almost the same level as real gun - The inner barrel is a precision one - 6.03mm - Dilute phosphoric acid manganese as surface treatment, which is double the cost compared to manganese. This ensures no rust, and will not scratch easily - The gas consumption of M4 magazine is higher than that of the G5?s mag. M4 magazine enables approx 1 and 1/2 mag a time in auto mode; 2 to 3 mags in semi mode