Internal diameter of the barrel.
generally you can establish the "power" of a weapon by its caliber this works great with small arms, once you get in to bigger guns ie artillery and ships guns there is more to it then just caliber. but even with small arms the power can range widly with each bullet comes different powder loads, different lead weights, and different types of bullets.
Yes, there is no requirement to actually have arms on the body. The arms here reference a weapon, as in 'small arms.'
7.62x39..same as SKS and other soviet block small arms
No. "Firearm" is defined basically as a small arms weapon, as a rifle or pistol, from which a projectile is fired by gunpowder. A slingshot is a weapon, but not a firearm.
It is a small short barreled .32 caliber revolver made by Charter Arms, value about $125-$175, depending on condition.
You will need to take it to a gunsmith.
No, a Sergeant at Arms from Toastmasters International does not carry a lethal weapon.
The P90 personal defense weapon is manufactured by Belgian small arms manufacturer Fabrique Nationale d'Herstal.
The classification of the bazooka as a small arm is a bit questionable. Although it was carried by an individual, it was served by a gunner and loader/ammo bearer, which made it a crew served weapon. Small arms are individual weapons.
A 7 round .22 caliber pistol by ARM Co is between 10 and 30 years old depending on the model. This can be determined by cross referencing the serial number or by taking it to a gun appraiser.
You will have to specify what year and what country.
In this case, it would mean to "bear arms" - as in "carry a weapon.""He bears his load.""He bears a weapon."It means, "To carry a weapon."