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  1. #1
    Join Date
    Sep 2010
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    Rainier Arms Phosphate BCG

    Rainier Arms has a new Phosphate coated BCG. These aren't the same as their "Thunder Bolt Carriers" as the finish appears to be different as it's duller. The price is also slightly lower. However, in usual Rainier Arms style, it appears they somehow kept the same quality as their specs are top notch and come with a limited lifetime warranty:

    Description:

    The Rainier Arms BCG was created to meet and exceed all Mil Spec standards. The bolts are MPI tested & Marked to give you ultimate confidence in your weapon system.

    Carrier:

    SAE 8620
    Heat Treated
    Nickel Boron Plated

    Bolt:


    Carpenter A-158
    Shot Peened
    Heat Treated
    Nickel Boron Plated

    Extractor:

    Machined from bar
    Shot Peened
    Heat Treated
    Nickel Boron Plated

    Extractor Spring:

    Chrome Silicone for Longer Life
    Black Insert as per current Mil-Spec
    "O" Ring is high temp resistant dark brown

    Extractor Retaining Pin:

    Precision Machined
    Precision ground to diameter
    Precision ground to length
    Heat Treated

    Firing Pin:

    Machined and then precision ground for accuracy
    Heat Treated

    Gas Key Bolt:

    Precision manufactured in house with extra deep knurling
    Grade 8
    1200 degree locking patch is factory applied to threads to help insure long lasting tightness

    Gas key:

    Hard Chrome lined gas tube as per Mil-Spec
    Bolts installed to proper torque
    Staking on both sides of both bolts

    Cam Pin:

    Precision machined
    Heat Treated
    Nickel Boron Plated

    Firing Pin Retaining Pin:

    Precision bent
    Precision cut to length
    Heat Treated

    Gas Rings:

    Stainless Steel per Mil-Spec

    Ejector:

    Precision machined
    Heat Treated

    Ejector Spring:

    Chrome Silicone
    Precision ground ends

    Ejector Retaining Pin:

    Precision cut to length
    Hard Chrome Plated





    Limited Lifetime Warranty
    We are so confident in our Rainier Arms BCG we offer them with a limited lifetime warranty. So if at anytime your Rainier Arms BCG breaks on your during normal use(Intentional abuse & Gas Key wear not included) we will replace it.

    MSRP $151.95

  2. #2
    Join Date
    Jun 2009
    Location
    Maryland
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    These look great. BCGs have been in short supply even before the craziness started at the end of last year.

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