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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. JP Enterprises Enhanced Bolt - 6.5 Grendel
    JP Enterprises Enhanced Bolt - 6.5 Grendel
    $142.45
  2. V Seven Weapon Systems Heavy Buffer Tube - Carbine
    V Seven Weapon Systems Heavy Buffer Tube - Carbine
    $143.56
  3. Reptilia Corp RMU Picatinny Riser Mount - 9 Slot
    Reptilia Corp RMU Picatinny Riser Mount - 9 Slot
    $143.95
  4. Rainier Arms A-DAC-F AR-15 Stripped Lower Receiver
    Rainier Arms A-DAC-F AR-15 Stripped Lower Receiver
    $140.00
  5. KNS Precision Discarder Adjustable Gas Regulator - SCAR
    KNS Precision Discarder Adjustable Gas Regulator - SCAR
    $140.00
  6. Huxwrx Flash Hider-QD 6 - 5/8x24
    Huxwrx Flash Hider-QD 6 - 5/8x24
    $144.00
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