A metal cup placed on the end of
a lead
bullet to protect it against the hot gasses of
the burning powder charge.
Gas Port
A small hole in the
barrel of a gas-operated firearm
through which expanding gases escape to power the autoloading system or reduce
recoil.
Gas-Operated
An automatic or
semi automatic firearm where the propellant
gases are used to unlock the breech bolt and then to
complete the cycle of extracting and ejecting.
Gauge
The measure used to identify shotgun
bores.
It is based on the number of bore-sized lead balls
equal to one pound. For example, twelve lead balls
that fit the diameter of a 12 gauge shotgun equal
one pound. The most common sizes of shotgun gauge
are 10 gauge, 12 gauge, 16 gauge, 20 gauge, and
.410. The .410 is the exception in that it is
measured as a caliber not a gauge.
Grip
In handguns, the grip is the handle. In rifles and shotguns,
the portion of the stock to the rear of the trigger is considered the grip or
wrist.
Grip
Safety
In some handguns, such as the
venerable .45 Colt
semi automatic pistol, an auxiliary locking
device located on the grip prevents firing until it
is depressed.
