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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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  1. Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 16"
    Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 16"
    $855.00
  2. Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 13.7"
    Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 13.7"
    $950.00
  3. Noveske Two Port 5.56mm Muzzle Brake - 1/2x28
    Noveske Two Port 5.56mm Muzzle Brake - 1/2x28
    $84.55
  4. Faxon Firearms Gunner 5.56 NATO AR-15 QPQ Barrel - 20"
    Faxon Firearms Gunner 5.56 NATO AR-15 QPQ Barrel - 20"
    $188.60
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Items 113-124 of 124

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