Umarex 40rd CO2 Magazine for MP40 6mm GBB Rifle (1 Joule Version)

Umarex 40rd CO2 Magazine for MP40 6mm GBB Rifle (1 Joule Version) Steel Housing CO2 Magazine Suitable for MP40 Gas Blow Back GBB Rifle 40 Rounds Loading capacity Magazine Grab this spare magazine for your next skirmish This will have the MP40 shoot at around 280fps.