No, it must be permanently attached, meaning welded, to count as part of the barrel length.
Only if it's pinned and welded, so as to remain a permanent feature of the rifle.
Well, there are different length barrels for different M16 versions. Often, the rifling is a 1:7 on an M16, which means it makes one rotation every 7 inches. If your barrel has 21 inches of rifling, then it will make 3 complete turns as it leaves the barrel. You need to count the number of inches rifling you have, then divide by 7. If the rifling isn't 1:7, then you need to find out what it is for a particular rifle.
Thread count is a textile term. however The pro carbine has A5 barrel threads.
Yes- IF the flash suppressor is permanently attached by welding or hard (silver) solder, and is not readily removable.
Most barrel split from bore obstructions. Count your self lucky you are alive.
pitch /no of divisions of micrometer barrel
Yes, of course. This is like asking if our fingers count as part of our arm's length.
Eighteen inches for the barrel alone. This does not count any add-ons such as a choke.
length *breath
The word count, probably.
To count chain links accurately, lay the chain flat and use a ruler to measure the length of a certain number of links. Divide the total length by the length of one link to determine the total number of links in the chain.
A yarn count meter is the instrument that directly measures the yarn count. It calculates the length and weight of the yarn to determine the count, which indicates the thickness or fineness of the yarn.