Full metal construction.
Tokyo Marui Type 89 J.G.S.D.F. Gas Blowback Rifle
This gas magazine is designed to work with the Tokyo Marui Type 89 GBBR. The design is that of the standard M4/AR magazine and will fit most/all standard 5.56 style magazine carriers and putches. ,
x1 Tokyo Marui Type 89 J.G.S.D.F. 35rds Gas Magazine