Guarder Magazine Gas Injection Valve for WE / KJW / VFC Airsoft GBB Magazines

"Worked perfectly well in my WE M4-type magazines. The old valves stopped working and wouldn't let propane into the reservoir. These work 100%.

"I bought 6 of these for 6 of my mags and it fixed 2 big issues I had.

It fixed leaky refills and gas capacity.

The old valves would leak every time I'd try refilling the air and they didn't put in enough air.

This valve doesn't leak and is silent when refilling air so I know when the mag is full, and for some reason, the mags hold so much more gas thanks to these new valves.

"Does exactly what they need to do. Works flawlessly for the WE Apache MP5 GBBR magazines

"I bought 4 of these.

They fit very snugly and have a nice seal, fixed my leaky gas drum mags.

Don't over tighten though cuz they break really easily
(That's why I bought 4)