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. Sons Of Liberty Gun Works L9 Receiver Extension Kit
    Sons Of Liberty Gun Works L9 Receiver Extension Kit
    $151.05
  2. Q LLC Sugar Weasel Upper 300BLK 13"
    Q LLC Sugar Weasel Upper 300BLK 13"
    $1,125.00
  3. Q LLC Literally The Best Trigger Ever Made
    Q LLC Literally The Best Trigger Ever Made
    $299.00
  4. Hiperfire Xtreme AK Mark-3 Trigger
    Hiperfire Xtreme AK Mark-3 Trigger
    $95.25
  5. Noveske N4 Recon Gen 4 5.56 NATO Complete Upper - 16" Black
    Noveske N4 Recon Gen 4 5.56 NATO Complete Upper - 16" Black
    $1,496.25
  6. Q LLC Cherry Bomb Muzzle Brake 8.6BLK - M18-1.5
    Q LLC Cherry Bomb Muzzle Brake 8.6BLK - M18-1.5
    $90.00
  7. JMAC Custom ST-6 Skeletonized Tube
    JMAC Custom ST-6 Skeletonized Tube
    $103.46
  8. Knight's Armament Company (KAC) M-LOK Index Stop
    Knight's Armament Company (KAC) M-LOK Index Stop
    $62.37
  9. Noveske NSR Gen 4 AR-15 M-LOK Handguard - 13.5"
    Noveske NSR Gen 4 AR-15 M-LOK Handguard - 13.5"
    $280.25
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