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    YHM Yankee Hill Machine Billet Stripped Upper Receiver Model-57
    YHM Yankee Hill Machine Billet Stripped Upper Receiver Model-57
     $200.00  $179.95 
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    AXTS Weapons
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    AXTS Black Nitride Bolt Carrier Group Superior AR15 BCG M16 [Black-Nitride-BCG] $184.30
    ADD TO CART TO SEE TOO LOW TO SHOW PRICE!
     
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    AXTS Black Nitride Bolt Carrier Group Superior AR15 BCG M16 AR-15 Full Carrier Body

    When you are looking for the best, this BCG blows away "Mil-spec". The AXTS bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is superior case hardened 9310 steel, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black nitride. Bolt lugs are CNC ground following heat treatment to insure the greatest accuracy possible.

    Unlike hard chrome and magnesium phosphate, Nitride 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 part achieves complete corrosion resistance and hardness that allows 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 maximum longevity.

    A standard Mil-spec 8620 steel bolt has a number of factors limiting its performance, not the least of which is that the life expectancy of such bolts is only about 6,000 rounds. In fact, standard bolts will start to show stress cracks on the locking lugs adjacent to the extractor cut after only 3,000 rounds. Cracking at the cam pin hole and weak extractor spring tension only add to the problems of the Mil-spec bolt.

    This latest technology Enhanced BCG utilizes a bolt beginning from SAE 9310 high-grade steel. This material makes for an extremely hard surface with a tough, ductile core resistant to structural failure and a life expectancy far exceeding Mil-spec 8620-type bolts. SAE 9310 is the same type of steel used in the transmission gears of Formula One racecars, and the high-load application of a bolt assembly is ideal for this state-of-the-art material; the results of actual full-auto endurance torture tests prove it. When combined with the latest Nitride coating, shot peened, MPI, HPT, and CNC ground lugs after heat treat, AXTS has truly created a state of the art best BCG for ultimate accuracy and longevity.

     
         
    This product was added to our catalog on Friday 20 March, 2015.
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    Adams Arms 16.5" Ultra Lite Advanced Dissipator Piston Upper 556
    Adams Arms 16.5" Ultra Lite Advanced Dissipator Piston Upper 556
     $689.95 
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