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. Silencerco ASR Blast Shield
    Silencerco ASR Blast Shield
    $126.65
  2. F5 MFG CZ Scorpion ACR Stock Adapter
    F5 MFG CZ Scorpion ACR Stock Adapter
    $125.00
  3. Icon Defense AR-15 Forged Lower Receiver - Black
    Icon Defense AR-15 Forged Lower Receiver - Black
    $123.99
  4. Lantac Dragon Muzzle Brake .223/556
    Lantac Dragon Muzzle Brake .223/556
    $128.99
  5. Faxon Firearms Light Tapered 9mm AR-15 Barrel - 10.5"
    Faxon Firearms Light Tapered 9mm AR-15 Barrel - 10.5"
    $124.20
  6. Primary Weapons Systems CQB Compensator
    Primary Weapons Systems CQB Compensator
  7. Battle Arms Development Complete Enhanced Lower Parts Kit
    Battle Arms Development Complete Enhanced Lower Parts Kit
    $125.00
  8. KynSHOT RB5000 Marksman Recoil Buffer - AR15 Carbine
    KynSHOT RB5000 Marksman Recoil Buffer - AR15 Carbine
    $124.95
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