Originally Posted by ybrik
There's a detent on the upper receiver when you put dust cover. If it keeps on moving back, just bend it more enough to catch that detent.
ACtually, i was trying really hard to push it in but i put it in the wrong way. The tabs were facing down instead of up. When the tabs were pointed up, it fit like a charm.
Btw, I wanted to ask you experts a question. Ive got my hop up and new inner barrel installed now. They are both sitting on the air nozzle right now, but I havent installed the outer barrel or delta ring. How come i can wiggle the outer barrel as its hanging out of the hole of the receiver? Is it supposed to be that loose? When i took out the hop out for the first time, there wasnt any screw that stabilized it... is this normal?