Page 103 - FAT 105 4.17 MOODLE

Figure 26: A toggle lock short recoil action.

breechblock itself. The center piece is will strip a fresh round from the
pinned to the block and end piece and magazine and feed and seat it into
is called the center toggle link. The the chamber. The breechblock will
opposite end of the breechblock is contact the barrel and drive the barrel
pinned to the frame and is called the forward. When the breechblock has
rear toggle link. In the closed position, driven the barrel completely forward
the pieces of the breechblock are par- and the toggle is parallel to the barrel,
allel, in line with the bore. When the the chamber is locked.
breech is completely open, the center
› The toggle lock action was first put
and rear toggle links will turn upward,
into production in 1900, making it
resting almost vertically.
one of the oldest short recoil semi-
During discharge, the pressure inside automatic actions. The Luger P08 is
the chamber will cause the locking a semi-automatic pistol that utilizes
surfaces to hold it closed until the
bullet has exited the bore and pressure
has dropped. The barrel and breech-
block will begin to move backward,
driving the toggles with it. Because
the toggle links are constrained from
moving straight back, they begin to
lift. The joint between the center
and rear toggle links moves upward,
allowing the breechblock to move
backward.

› As the breechblock continues rear-
ward, it will extract and eject the
empty case and cock the striker. On Figure 27: Luger P08 toggle lock pistol.
its forward stroke, the breechblock

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