[cbcsteve]

Ah yes thanks Tys and Brian but I think you got it Tys

"The feeding nozzle spring is cosmetic...it just causes the nozzle to snap back out of the way so that it doesn't appear in the ejection port."

Thats what it is doing when I shoot, the loading nozzle (sorry if I called it loading muzzle) just sticks out forward which causes the blowback to be slowed, at times if I shoot on empty and it racks backwards to its empty position I see the loading nozzle sluggishly move back