Originally Posted by heyds
When they jam do they just get stuck in the barrel? Like I just experience a bb pileup in the barrel and they fall out when I turn the gun upside down. Sometimes this doesn happen, but It is getting more and more frequent.
this problem might not be your bb's but your hop up rubber getting swollen from certain types of silicon oil. happened before with my kwa mp7.so i soaked my bucking in acetone and let it dry off for 1 day. not too sure if it happens with the mac 11 but look on kwa's forums and see if anyone else is having that problem