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  • Bushing
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    $5.10

    Bushing

    304 Stainless Steel Bushing for the Osprey Defense Gas Piston Systems

  • OPS-418
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    $299.99

    OPS-418

    OPS-418 16-18" Mid-length barrels up to 1.00" in diameter Works with Free Float hand guards on…

  • Op-Rods
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    $59.99

    Op-Rods

    Op-Rods come in Carbine Standard, Carbine Modified, Mid Length Modified, and Rifle Length Modified …

  • M4-OPL 16" M4-OPL 16"
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    $699.99
    MSRP $899.99

    M4-OPL 16"

    Limited Production Upper Receiver Group These complete upper assemblies are feature packed at an in…

  • OPS-416 OPS-416
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    Osprey Defense

    $299.99
    MSRP $349.99

    OPS-416

    OPS-416 11.5 -16" Carbine barrels up to 1.00" in diameter 5-minute install – The true dr…

  • Retention Pins
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    $3.59

    Retention Pins

    Sold in a set of 2. Solid gas block retention pin (required for the Osprey Defense Gas Piston S…

  • OPS-420 OPS-420
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    $299.99

    OPS-420

    OPS-420 20 - 24" Rifle-length barrels up to 1.00" in diameter Works with Free Float handguards…