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. Rise Armament .223/5.56 Bolt Carrier Group - Nickel Boron
    Rise Armament .223/5.56 Bolt Carrier Group - Nickel Boron
    $179.99
  2. Ballistic Advantage .308 Bolt Carrier Group - NiB
    Ballistic Advantage .308 Bolt Carrier Group - NiB
    $251.75
  3. WMD Guns AR10 Bolt Carrier Group - NiB-X
    WMD Guns AR10 Bolt Carrier Group - NiB-X
    $259.00
  4. WMD Guns AR15 Bolt Carrier Group - NiB-X (Black)
    WMD Guns AR15 Bolt Carrier Group - NiB-X (Black)
    $190.00
  5. WMD Guns AR15 Bolt Carrier Group - NiB-X
    WMD Guns AR15 Bolt Carrier Group - NiB-X
    $164.00
  6. Daniel Defense AR-15 Bolt Carrier Group (BCG)
    Daniel Defense AR-15 Bolt Carrier Group (BCG)
    $228.00
  7. LANTAC E-BCG
    LANTAC E-BCG
    $261.99
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