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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. Rise Armament .223/5.56 Bolt Carrier Group - Nickel Boron
    Rise Armament .223/5.56 Bolt Carrier Group - Nickel Boron
    $179.99
  2. Surefire Socom 5.56mm 4-Prong Flash Hider - 1/2x28
    Surefire Socom 5.56mm 4-Prong Flash Hider - 1/2x28
    $179.00
  3. HiperFire PDI AR15/10 Drop In Trigger Assembly - BLK
    HiperFire PDI AR15/10 Drop In Trigger Assembly - BLK
    $171.00
  4. Midwest Industries Marlin M-Lok Handguard
    Midwest Industries Marlin M-Lok Handguard
    $178.95
  5. Reptilia Corp LINK FOR CZ SCORPION EVO
    Reptilia Corp LINK FOR CZ SCORPION EVO
    $170.95
  6. Nemo Arms .223/5.56 Bolt Carrier Group (BCG)
    Nemo Arms .223/5.56 Bolt Carrier Group (BCG)
    $170.00
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