KSC 18c getting stuck in full auto

[jammi]

works fine in semi and in full auto you may be able to get a few rounds of sometimes a hold mag but most of the time after a few shots the slide stuck and vents the gas you cant rack the slide back until you drop the mag.

It looks like the nozzel gets stuck on mags bb outlet and stops the slide cycling fully also keeping the hammer on the valve releasing all the gas.