The value of the Blackhawk will be quit a bit higher due to the fact they only made a limited number of them. A person cant really determine the number value with out seeing both weapons
No, there is no difference between an inside and outside barrel. Doran is an idiot
The difference between barrel and gallen is that a barrel can load 220 litre oil and a gallon can load millions of oil.
Size
The amount of constriction at the muzzle
A barrel roll is awesome and much better.
Well one has the word barrel in front of it. duhhh
100-350 USD
They were made in several calibers- will be marked on the barrel.
Selmer 100
One barrel
M4 is the carbine- shorter barrel
bigger and longer barrel