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M61A1 GUN PRINCIPLES OF OPERATION - 14024_170
Clearing Cycle

Aviation Ordinanceman 1 - Aviation theories and other practices
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Figure 6-8.—Round guided into breech-bolt assembly. If you look at the rotor from the rear, you see that it As the breech-bolt assembly enters the front dwell revolves in a counterclockwise direction. The area of the main cam path, the locking cam forces the ammunition is received from an external source. It is bolt shaft down, locking the bolt in the front locking well guided into the extractor lip on a breech-bolt assembly of the rotor (fig. 6-9). The insulated portion of the by the guide bar fingers (fig. 6-8), The bolt roller shaft contact cam in the firing contact assembly depresses the follows the main cam path and moves the bolt assembly firing pin cam in the breech-bolt assembly. This moves forward along the rotor tracks, cambering the round. the firing pin forward against the primer of the round. Figure 6-9.—Breech-bolt assembly in firing cycle. 6-7







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