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. Faxon Firearms PENCIL .308 Win AR-10/LR308 Barrel - 16"
    Faxon Firearms PENCIL .308 Win AR-10/LR308 Barrel - 16"
    $238.28
  2. Spinta Precision AR-15 300BLK Cold Hammer Forged Barrel - 8" (Limited Production)
    Spinta Precision AR-15 300BLK Cold Hammer Forged Barrel - 8" (Limited Production)
    Special Price $149.99 Regular Price $199.99
  3. Huxwrx Flash Hider-QD 762 Suppressor Mount - 5/8x24
    Huxwrx Flash Hider-QD 762 Suppressor Mount - 5/8x24
    $142.00
  4. Sig Sauer MCX Spear - LT 7.62X39 Complete Upper 11.5"
    Sig Sauer MCX Spear - LT 7.62X39 Complete Upper 11.5"
    $1,999.99
  5. Huxwrx Shim Kit
    Huxwrx Shim Kit
  6. Huxwrx Flash Hider-QD 6 - 5/8x24
    Huxwrx Flash Hider-QD 6 - 5/8x24
    $144.00
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