Is this right on the condor?

Hey all.

So i was shooting my condor in my yard today and i noticed something, and i want to be sure my gun is working ok, it shoots just fine, but i want to be sure whats happening is ok.

In this 1st image we can see that behind the part you push back to load the pellet, there seems to be a rubber ring? of some-kind and then what seems to be a piece of tubing made of metal.

In this image, the gun has a pellet in the barrel and is loaded. safety is on.
however that part of the gun is now missing and i can see the barrel inside that the pellet travels down.

My question is, is it normal to be able to see a gap like this when im about to fire? iv not noticed it before and i would hate to be using it, if its causing damage.

Thanks if you reply!