KWC Mini UZI Auto fire prob
 

Hi, first post here in this section, I have a used Uzi shoots at 450fps semi (still shoots in semi) but it does not fire well in Full Auto mode, It will shoot 3 or 4 rounds full auto then it stops and hisses for a secound or so, if i cock the gun it fires another 3 or 4 rounds then does the same thing.
the seals on the mag look fine. Could it be a weak spring on the hammer? or maybe a bent pin? I donno, i've examined every peace, all looks as it should. As i said it fires very well in semi...



Anyhow any and all help would come in handy.
Thanks

I updated the symptoms
 

Article above describes all symptoms.

Solved !!
 

It turns out the Magazine is the problem, the gas release plunger is wonky , causeing it to vent gas. I'm going to buy more mags, and some parts.