raineirarms

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. Q LLC Sugar Weasel Upper 300BLK 13"
    Q LLC Sugar Weasel Upper 300BLK 13"
    $1,125.00
  2. Q LLC Flash Hider 8.6BLK - 5/8x24
    Q LLC Flash Hider 8.6BLK - 5/8x24
    $115.00
  3. Q LLC Cherry Bomb Muzzle Brake 8.6BLK - 5/8x24
    Q LLC Cherry Bomb Muzzle Brake 8.6BLK - 5/8x24
    $90.00
  4. Q LLC Cherry Bomb Muzzle Brake
    Q LLC Cherry Bomb Muzzle Brake
  5. Faxon Firearms Gunner 300BLK AR-15 QPQ Barrel - 16"
    Faxon Firearms Gunner 300BLK AR-15 QPQ Barrel - 16"
    $165.60
  6. Heresy Design AUG Barrel Conversion Kit 300BLK - 16.3"
    Heresy Design AUG Barrel Conversion Kit 300BLK - 16.3"
    $799.95
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