5.56 Mil-Spec+ Bolt Carrier Group with Nickel Boron Coated Bolt and Cam Pin

    March 11, 2014
    Related To:
    Flyerboltcarriergroup18jsr3ihsrveo 11326659

    Bolt 

    • Carpenter 158 Steel
    • Heat treated per Mil-Spec Requirements
    • Shot Peened per Mil-Spec Requirements
    • MPI Tested Material Per Mil-Spec Requirements
    • NIBX Nickel Boron Coated
     
    Extractor
    • Aircraft Quality E4140 Steel
    • Heat treated per Mil-Spec Requirements
    • Shot Peened per Mil-Spec Requirements
    • Manganese Phosphate Coated per Mil-Spec Requirements
     
    Bolt Carrier Gas Key - 4130 material, chrome-lined, phosphate coated, staked gas key screws per Mil-Spec Requirements
    Carrier - 8620 material, chrome lined, phosphate coated
    Cam Pin - 4140 nickel boron coated 
    Firing Pin - S7 Material and chromed Firing Pin Retainer

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