Page 39 - FAT 105 4.17 MOODLE

contracted, energy created by the fired pull against the rim of the case until the
cartridge will overcome the inertia of the extractor has completely removed the
bolt/breechblock/slide and begin to push case from the chamber. Once the case
it rearward, opening the chamber. This is fully extracted, it can now be ejected.
type of action is typically reserved for low With revolvers, the extracting and eject-
power pistol and rimfire cartridges. ing steps are the same.
• Extracting – The extracting step in the
Ejecting – The ejecting step in the cycle of
cycle of operations removes the spent
operations completely removes the spent case
cartridge case from the chamber. A part
from the breech of the firearm. This can hap-
called the extractor, which features a
pen either manually or automatically depend-
small hook on its inside face, is used to
ing on the type of action being employed. A
grab the rim of the cartridge case. As the
part called the ejector is used to drive the spent
action cycles, either manually or auto-
case out of the breech. There are two types of
matically, and the bolt/breechblock/slide
ejectors: stationary and dynamic.
begins to move to the rear of the action,
the extractor will pull on the cartridge Stationary ejectors are typically fixed to
and begin to remove it from the cham- the receiver of the firearm. As the action
ber. As the action continues to move cycles, either manually or automatically,
rearward, the extractor will continue to the extractor will pull the case into the

Figure 8: The extracting step in the cycle of operations.

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