Grenade Launcher 40mm Cartridges

[taroslice]

Bought 3 40mm cartridges during my holiday few weeks ago.

Tested in the shop and they worked fine...but when i got home i dont know why its not holding any gas at all!

Am i doing something wrong or is there anyone that could help me?? Thanks

 

[M_P]

have you lubed it up?

 

[Rock-climby-Dave]

Have you reset it?

get a pen and depress the 'bang' button fully untill it clicks, then fill like normal

 

[lil airsofter]

seals checked, good gas, same gas as shop, filled enough, filled properly.