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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. R&D Precision 9mm PW9 AR-15 Barrel - 7.25"
    R&D Precision 9mm PW9 AR-15 Barrel - 7.25"
    $99.99
  2. Icon Defense AR-15 Forged Lower Receiver - Black
    Icon Defense AR-15 Forged Lower Receiver - Black
    $123.99
  3. Ascalon Arms CZ Scorpion EVO 3/3+ Receiver Shim
    Ascalon Arms CZ Scorpion EVO 3/3+ Receiver Shim
    $17.40
  4. Ascalon Arms CZ Scorpion EVO 3/3+ Trigger Spring Kit
    Ascalon Arms CZ Scorpion EVO 3/3+ Trigger Spring Kit
    $22.00
  5. Strike Industries AR Pistol Grip Adapter for CZ Scorpion
    Strike Industries AR Pistol Grip Adapter for CZ Scorpion
    Special Price $57.92 Regular Price $71.95
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