Page 141 - FAT 105 4.17 MOODLE
P. 141

Figure 15: Various types of safeties and selectors.



                       selector that will allow from two to four       Proper function and care of safeties/selec-
                       modes, depending on design: Safe, Semi          tors is critical to any firearm’s function.
                       (-automatic), Auto (-matic) and/or Burst.       Safeties/selectors that become damaged
                                                                       or broken, or even extremely dirty, can
                       There are two basic safety/selector designs:
                                                                       become very dangerous. A failure in the
                       button and lever. There are variations of
                                                                       safety/selector can lead to an acciden-
                       the button design that are based on the
                                                                       tal discharge that can lead to injury or
                       way it is manipulated. Some buttons are
                                                                       worse. Take the time to clean and perform
                       pushed, like with crossbolt safeties found
                                                                       maintenance on the safety/selector when
                       behind the trigger on the trigger guard of
                                                                       cleaning your firearm.
                       some designs. Other buttons must slide
                       back and forth between modes. There are         The bolt/charging handle is used to ma-
                       also variations of the lever design. Some       nipulate the action, often completing
                       levers rotate, engaging different modes as      many of the cycles of operation. The bolt/
                       they turn. A fairly new style of lever safety   charging handle is found with both man-
                       is being employed with the trigger safety.      ual and semi/automatic actions in both
                       The trigger safety is a true lever design       rifles and shotguns.  Typically, repeating
                       with one leg of the lever protruding from       pistols do not use bolt/charging handles
                       the trigger’s face and the other leg in the     (with semi-automatic pistols, the slide
                       path of the frame.  When the operator           itself is manipulated like the bolt/charg-
                       places their finger on the trigger, depress-    ing handle).  With an empty chamber,
                       ing the safety, the opposite leg moves out      when the bolt/charging handle is pulled
                       of line of the frame and allows the trigger     to  the  rear of  the  firearm,  the  action is
                       to move backward. Safeties/selectors are        opened and often the hammer/striker
                       made from various materials, including          is  cocked.  Depending  on  action  type,
                       steel, aluminum, and polymer.                   the bolt handle may need to be pushed




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