Glock 19x Green Gas Spare Magazine - Tan (Full Blowback) Tokyo Marui Magazines so you need specific battery

so you need specific battery sizes to fit properly

Fits in M4 buffer tubes and most PDW style stocks

PDW stocks

HPA technology makes cracked gearbox shells and grinding gears a thing of the past

not flip style

Glock 19x Green Gas Spare Magazine - Tan (Full Blowback) Tokyo Marui Magazines so you need specific batteryThe Glock 19x Green Gas Spare Magazine Tan for the airsoft full blowback model. G19x Coyote Dark Earth Tan color magazine. For use in the Glock 19x but also fits in the G17 gas gun (green gas) version. This fits the VFC full blowback gas gun by Elite Force (licensed models). All metal construction and built for durability. 2276329 Holds 23 rounds.