WE G18c magazine Issues

[rykou]

Hi guys, recently i bought 2 spares magazines for my g18c, the weapon by it self is amazing (with the stock mag)

this is the website i bought the spares ones https://www.airsoftworld.net/we-glock-g17-spare-magazine.html

 

the issue is when you shoot, i looks like dont do the full blow back after 5 shots, making you shot 1 with bb, 1 without.

 

that just happen with the spares one.

I was wondering if that could be some kind of pressure issue.

There is no leaking after gas reload.

any idea how to fix that?

 

(ps i notice the stock mag, has waaaay more pressure, and locks the weapon when bb's gone, like is supposed to be)

 

thank you guys