2-1 Assemble the Rifle

  
  

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 5.  Place the bolt cam pin.
 6.  Drop in the firing pin.
 7.  Put the firing pin retaining pin in.
 8.  Pull the bolt back.
 9.  Place the charging handle.
 10.  Slide the bolt carrier into the upper receiver.

Place the bolt cam pin by putting it in
the bolt carrier turning it one-quarter
turn.