GHK M4 PMAG 40rds Gas Magazine For GHK G5 / M4 GBBR
 
Compatible with GHK and Golden Eagle GBBR
Polymer Constructed Magazine Case
GHK G Mag Type
Version 3 Design 
40 Rounds Capacity 
Compatible With GHK AR / M4 / G5 GBBR Series 
40rds Capacity