M...
Review confirmed by purchase 
The magazine is identical to the one sold with ICS replicas. The external housing is made of metal. The inside of the magazine rattles a bit in the external metal housing. I use 0.3 g BBs, and at the end of the magazine, when there are 3-5 BBs left, the spring is not strong enough to push them out of the magazine. It doesn't always happen. Maybe with lighter BBs, this problem would not occur.
