The G&G GPM1911 CP 29R Gas Magazine is made up of alloy and polymer to offer better quality & durability.  It feeds on green gas to impressively fire up to 30 rounds of 6mm BBs and can be pre-loaded with BBs for immediate use as soon as need.   You simply need to switch the empty one with the loaded one and you are done.

Specifications:

• Alloy and Polymer Body
• 30 Round Capacity
• Fits G&G GPM1911 GBB Pistol