The highly sought after metal shaker mags will be restocked mid October.
For everyone with the Hi-Capa/Glock M4 mag adaptors, this is the magazine you need whether it be HPA or Gas. This magazine can also be compatible with other styles of M4 blasters, though be aware to prime this magazine you will have to shake it to allow the gel balls to feed.
Do not expect it to feed like other styles of magazines, this is strictly a shaker battery operated magazine.
Also compatible with the JG brand short M4A1.
These magazines do not contain mag terminals. You will need 1x AAA Battery to operate this magazine.