Our take: This factory original spare King Arms Colt M4A1 Gas Blowback Rifle spare magazine is amazingly inexpensive compared to other spare gas blowback rifle magazines! This spare King Arms GBB Colt M4A1 magazine can use HFC134a gas (low pressure gas), green gas, or propane with silicone oil. The magazine has a large gas reservoir capable of holding more than enough gas to empty your entire magazine. The magazine has a 50 round capacity, which is perfect for most MilSim airsoft games. This magazine is constructed entirely of high grade metal and has a reinforced nozzle and magazine feeding lip. Most other gas blowback rifle magazines cost over $50 each! This is a must have if you are using the King Arms Colt M4A1 Gas Blowback Rifle!
Note: Filling the magazine OVER 50 rounds can damage your airsoft GBB rifle.
Manufacturer: King Arms
Compatibility: 100% Compatible with the King Arms Colt M4A1 GBB Rifle
Magazine Capacity: 50rds
Construction: Full Metal
Gas Compatibility: HFC134a, Green Gas, Propane w/ Silicone Oil