Page 50 - FAT 105 4.17 MOODLE

MANUAL ACTIONS • Rounds are fed and chambered by hand
into the exposed chamber(s). (2)
Manual actions rely on the operator to perform
many of the steps of the cycle of operations. This • The operator closes the breech and locks
means the operator must physically manipulate the action by manually rotating the bar-
part of the firearm’s action to feed, chamber, rels around the hinge pin until the lock-
lock, cock, fire, unlock, extract, and eject the car- ing lug or crosspin engages. (3)
tridge. There are many different types of manual
• Depending on the firearm, the
actions with several different types of operation.
hammer(s) or strikers(s) must be manu-
BREAK-ACTION ally cocked or are cocked automatically
when the action is opened or closed. (4)
Break-action firearms are so named because the
• The trigger(s) is/are pressed, releasing
action will “break open” to reveal the breech.
the hammer(s) or striker(s) and discharg-
The barrel(s) is/are hinged to the receiver and
ing the cartridge(s). (5)
allow them to rotate to open and close the ac-
tion. The break-style action is used with pistols,
• The top lever is manipulated once again,
rifles, and shotguns. The break-action system is
unlocking the breech and allowing the
a manual action that must be manipulated by
barrel(s) to rotate around the hinge pin,
the operator in order to complete the cycle of
exposing the chambers. (6)
operations. With an empty and locked action,
the cycle of operations for a break-action fire- • Depending on the firearm, the empty
arm is as follows: cartridge case(s) is/are either extracted
and ejected manually, when the operator
• A lever on the top rear of the receiver
physically removes it from the chamber,
(top lever) is manipulated to unlock the
or automatically when the action opens
action and allow the barrel(s) to rotate
and a spring-loaded extractor/ejector
around the hinge pin, exposing the
pushes the case out of the breech. (7)
breech and chamber(s). (1)

Figure 20: Combination gun barrel layout.

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