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Due to Measure 114, Rainier Arms will prioritize order shipments to Oregon state residents.

300BLK

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  1. Rainier Arms Match 300BLK Barrel
    Rainier Arms Match 300BLK Barrel
    As low as $260.00


    Satisfaction Guarantee

    We are so confident in our barrels that we offer a 100% money back guarantee within 90 days of purchase.  If our barrels don’t meet or exceed your expectations, for any reason, return it for a full refund.

    Learn More
  2. Rainier Arms Ultramatch MOD2 300BLK Barrel - 10
    Rainier Arms Ultramatch MOD2 300BLK Barrel - 10"
    As low as $400.00

    Satisfaction Guarantee
    We are so confident in our barrels that we offer a 100% money back guarantee within 90 days of purchase.  If our barrels don’t meet or exceed your expectations, for any reason, return it for a full refund.

    Learn More
  3. Rainier Arms Ultramatch MOD2 300BLK Barrel - 16
    Rainier Arms Ultramatch MOD2 300BLK Barrel - 16"
    As low as $400.00


    Satisfaction Guarantee
    We are so confident in our barrels that we offer a 100% money back guarantee within 90 days of purchase.  If our barrels don’t meet or exceed your expectations, for any reason, return it for a full refund.

    Learn More
  4. Rainier Arms Exclusive Faxon Firearms 300BLK Chrome Lined 4150 5R Barrel
    Faxon Firearms 300BLK Chrome Lined 4150 5R Barrel
    As low as $189.00

    Faxon Firearms 300BLK Chrome Lined 4150 5R Barrel

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  5. Ballistic Advantage Modern Series .300 BLK Barrel - 8
    Ballistic Advantage Modern Series .300 BLK Barrel - 8"
    $147.25


    Ballistic Advantage Modern Series .300 BLK Barrel - 8"

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  6. Rainier Arms Select 300BLK Barrel
    Rainier Arms Select 300BLK Barrel
    As low as $175.49


    Satisfaction Guarantee
    We are so confident in our barrels that we offer a 100% money back guarantee within 90 days of purchase.  If our barrels don’t meet or exceed your expectations, for any reason, return it for a full refund.

    Learn More
  7. V Seven Weapon Systems 300BLK Fluted Barrel w/ Ti Gas Block - 6.5
    V Seven Weapon Systems 300BLK Fluted Barrel w/ Ti Gas Block - 6.5"
    $384.12
    Out of stock


    V Seven Weapon Systems 300BLK Fluted Barrel w/ Ti Gas Block - 6.5"

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