X-lite fuel pump quick connects: How do they work?

I've never been very good at puzzles-

I've tried pulling back on the grey cap, like an air hose connection. The cap moves a little bit, but the male part doesn't budge.
I've tried twisting and squeezing too.

It's all plastic, so I don't want to force anything..

Never mind, I got it.

How did you get it?

(for those still wondering)

With a tiny flat blade screw driver, I nudged the 4 tiny tabs deep inside the connector (last pic) to the sides and popped the male end loose. Those of you with 4 or more hands will find it a cinch to do.

There must be a clamshell tool that you could close over the fuel line and ram down into the connector to disconnect.

Thanks. You just saved me from damaging it. Small Flathead screw driver did the trick.

Sell those at auto part stores for quick disconnect fuel lines .

That looks like the same kind of connector as on several other Huskys. On those you push down on the gray ring from the tab side and pull on the male fitting the same time. Not sure on these.