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Rifle Parts

Whether you're building a new rifle from scratch or looking to upgrade an existing firearm, our vast selection of rifle parts has everything you are going to need in that journey. At Rainier Arms' selection of rifle parts, you can find a wide variety of products including lower and upper parts, trigger parts, muzzle devices, and many more. 

Explore our selection of high-quality parts coming from various leading manufacturers like Strike Industries, Magpul, BCM, and many more.

Also, don't forget to check our specially-made Rainier Arms barrels for your firearms.

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  2. Arms Republic 9mm Complete Upper Assembly - 16"
    Arms Republic 9mm Complete Upper Assembly - 16"
    $460.00
    Out of stock
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  3. JK Armament 155LT Compensator End Cap - 9MM
    JK Armament 155LT Compensator End Cap - 9MM
    $77.40
    Out of stock
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  4. Noveske 3 Lug Adapter 1/2X28
    Noveske 3 Lug Adapter 1/2X28
    $71.25
    Out of stock
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  5. Huxwrx 9MM 3-Lug Housing Adapter
    Huxwrx 9MM 3-Lug Housing Adapter
    $112.00
    Out of stock
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  1. AR-15 Barrel 35 items
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