this is what i found... no wonder why i was getting too much hop up and eventually jam when i adjust the hop up near 3/4 to max. This is the
http://www.airsoftparts.ca/store2/in...roducts_id=899... i wanted to transfer the hopup set to my new CYMA aks74u, then i noticed this crack. it was in my kraken which was doing approx 380 fps. should i go with hard or soft (again) after finding this crack?