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    Yankee Hill Mid-Length Todd Jarrett Handguard YHM-5007-TJ
    Yankee Hill Mid-Length Todd Jarrett Handguard YHM-5007-TJ
     $192.50  $139.95 
    Manufacturers Info
    Adams Arms
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    Valhalla Valkyrie Upgrade 5.56 AR15 Bolt Carrier Group AR-15 BCG [VTS-BCG-S]  $159.95  $144.95 

    Valhalla Valkyrie Upgrade 5.56 AR15 Semi-automatic Bolt Carrier Group AR-15 BCG

    Whether you are looking for an Enhanced Bolt Carrier Group or a top quality spare, the Valhalla BCG is a great choice at an economical price. 


    • Upgraded Melonited Bolt
    • Assembled Bolt Carrier Group for AR-15
    • Hard Chrome Lined Semi-Auto Carrier with Milspec Phosphate Finish
    • Enhanced Full Shrouded Firing Pin
    • Chrome Lined, Staked Gas Key
    • Excellent Quality
    • Made in USA


    The Valkyrie Bolt Upgrade is offered to meet and exceed all Mil Spec standards by including three of the most significant reliability upgrades you can buy.  This is upgraded to be used for direct impingement (aka gas tube) systems as a replacement/spare.   First, the Bolt is Ion Bonded for superior corrosion resistance and durability even when using inexpensive corrosive surplus ammunition. Second, a Milspec Viton O-ring is installed to assist in eliminating extraction problems in the M16, M4, and AR15.

    Adams Arms Advantage:

    Our bolts are finished with our proprietary QPQ Melonite process inside and out. Unlike hard chrome and magnesium phosphate, Melonite is a molecular bonding process with the metal. It allows the chemicals to seep down below the surface area of the metal, instead of just adding a top layer. This means that the bolt can offer complete corrosion resistance and virtually no wear. It also means that the protection offered is not just a thin layer on top of the material but actually penetrates layers deep ensuring that it does not wear off.


    • Heat Treated
    • Melonite Ion Bonded
    Extractor Spring:
    • Chrome Silicone for Longer Life
    • Black Insert as per current Mil-Spec
    • Upgraded “O” Ring is high temp resistant

    Extractor Retaining Pin:

    • Precision Machined
    • Heat Treated
    • Precision machined
    • Heat Treated

    Ejector Spring:

    • Chrome Silicone
    • Precision ground ends

    Ejector Retaining Pin:

    • Precision cut to length
    • Black Zinc Coating

    Adams Arms Limited Lifetime Warranty


    Upgrade to KNS Perma Pin

    Upgrade to Nickel Boron Firing Pin 

    Available Options:
    Kit Options:
    This product was added to our catalog on Wednesday 28 August, 2013.
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    Dead Foot Arms MCS Modified Cycle AR15 Pistol or Side Folder Rif
    Dead Foot Arms MCS Modified Cycle AR15 Pistol or Side Folder Rif
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