Insure that the rifle is unloaded. The rifle must be cocked, so that the firing pin does not protrude from the bolt face. With the bolt closed, insert a wooden dowel that is close to the bore size into the muzzle, and slide down until it contacts the closed bolt. Mark the dowel at the muzzle, withdraw, and measure distance from mark to end of dowel. This is also the technique used for most other firearms. REVOLVERS are measured differently.
The length of a rifle barrel that measures 172mm is 6.77 inches.
It depends.. if you have a carbine length barrel and will be using it on a rifle with a carbine length barrel, then yes. If you took it from a rifle with a rifle length barrel, and are putting it on a rifle with a carbine length barrel, then it won't function properly.
In Ohio, the legal minimum barrel length for a rifle is 16 inches. Any rifle with a barrel length shorter than that would be considered a short-barreled rifle, which is regulated under the National Firearms Act (NFA).
A carbine is a type of rifle.
Muzzle to bolt face
The dimensions of an M4 rifle are approximately 33 inches in length with a barrel length of about 14.5 inches.
The minimum legal barrel length for a rifle without requiring it to be tax stamped and registered as a Short Barreled Rifle is 16 inches - that's federal law, and not just Vermont.
16"
16 inches
From the breech.
From the breech
An assault rifle is a rifle that has more than 22'' inches of barrel and has selective firing rate, while the carbine rifle has a less 22'' inches barrel and semi automatic. ^^ Wrong.. An assault rifle is any select fire rifle that is chambered for an intermediate cartridge... Barrel length has nothing to do with it. The M16 has a 20" barrel length and is considered an assault rifle. The AK47 has a 16" barrel and is considered an assault rifle... Carbines that are select fire and chambered in an intermediate cartridge are still considered assault rifles.