CYMA 30rnd Gas Magazine for M4/AR-15 CGS & ZET GBBRs

If you're getting gassed up for the GBBR season and you're running a CGS or TM ZET system GBBR, fill your rig with these! The CYMA 30rnd Green Gas Magazine for M4/AR-15 CGS & ZET GBBR is compatible with both CYMA CGS and Tokyo Marui ZET system M4/AR-15 GBBRs and is a green gas magazine with the fill valve on the rear of the steel STANAG style body. The mag can be loaded through the feed lips at the top of the magazine, though this can be challenging with a standard speed loader without a GBBR adapter. As with the original TM and CYMA GBBR magazines, these mags include the bolt stop components which lock the bolt open at the end of a mag, and each mag holds 30 BBs.