2-1 Clean the Rifle

  
  

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   A3.  Clean the drain hole.
   A4.  Brush the dirt from the trigger mechanism.
   A5.  Clean the buffer and inside lower receiver extension.
 B.  Clean the bolt carraige group.
   B1.  The outer and inner bolt surfaces of the bolt carrier.
   B2.  Clean the carrier key.

Clean the drain hole with a pipe
cleaner.