And that is the stuff that I unscrewed and stripped from my KPVT barrel!
On top there are all those four fixator pins and below there are four out of five nuts that are initially mounted on it and if put together with the rest parts(on the last photo) they are considered the barrel assembly of KPVT HMG!So as I said,KPVT barrel assembly consists of 10 parts:4 pins,5 nuts and 1 barrel!