Kwa feeding issue help!!

[Teo]

Hi.

I recently acquired a kwa usp compact. The gun was working fine then I started to get an issue. When I pull the trigger the bb won't come out. This will happen for about 3 trigger pulls then on the fourth trigger pull, all 3 rounds will discharge. Please help

 

[two_zero]

2nd hand? first of all, take it down, clean it and lubricate it and see if it works

 

[armysurplusandtoys]

i agree with two zero clean it but also pay attention to the mag particularly the rubber sounds like the mag