Buy a rebuild kit- instructions and diagram included
You made the barrel, fitted the stock to the barrel, then fitted the lock to the stock.
Suppressors generally require modification to the barrel of the pistol. If you can machine the barrel and suppressor to mount together, yes.
A hole. When you put a hole in the barrel, it reduces the weight of the barrel. But, when you remove the hole, the barrel becomes heavier.
holes
With the forearm removed from the barrel, hook the barrel onto the action at about a 45 degree angle. Once hooked, close the action. Replace the forearm to keep the barrel from coming off.
You can put a hole in the barrel to make it weigh 8 kilograms.
When whiskey is bottled a number of oak barrels are dumped and blended together and bottled. Single Barrel Whiskey is bottled from one single oak barrel. Double barrel whiskey is aged in oak barrels then they are dumped and sometimes the proof is lowered and then put into a second new oak barrel to be aged again.
If it a Rochester carberator, there is no mixture adjustment. That is an internal setting done when the carburetor was put together or at the time of rebuilding. The only adjustments you can make is to the idle and choke I have a 93' 2500 vandura and It failed smog and I advanced the Timing a tiny bit and it passed....yaaaaay
Usually, liquor.
Helium.
No, do not put any lube in the barrel, but on the threads.
You could put a 1 kg weight inside the barrel to make it weigh 8 kg.