Feature：

➤ For WE / KJW GLOCK GBB pistol gas mag.
➤ Special slope design increase the air-seal with nozzle, decrease gas leak.
➤ The channel is designed to be straight and aerodynamically efficient, which leads to more stable shooting performance.
➤ Because of the variaty of different brands of GLOCK GBB pistols on the market, users can judge your mag's compatibility by checking if the contact surface is flat.
➤ Caution：NOT for WE Glock MOS version gas mag.