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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. Surefire WARCOMP 556 Flash Hider - 1/2X28
    Surefire WARCOMP 556 Flash Hider - 1/2X28
    $152.00
    Out of stock
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  4. V Seven Weapon Systems Heavy Steel .308 & A5 Buffer Tube
    V Seven Weapon Systems Heavy Steel .308 & A5 Buffer Tube
    $157.14
    Out of stock
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  5. Surefire WARCOMP Closed Tine Flash Hider - 5.56mm Rifles
    Surefire WARCOMP Closed Tine Flash Hider - 5.56mm Rifles
    $152.00
    Out of stock
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  9. Aeroknox AX // 15 Handguard M-LOK
    Aeroknox AX // 15 Handguard M-LOK
    Out of stock
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  10. Geissele Super Stabby Bayonet Mount
    Geissele Super Stabby Bayonet Mount
    Out of stock
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  13. Sons Of Liberty Gun Works L9 Receiver Extension Kit
    Sons Of Liberty Gun Works L9 Receiver Extension Kit
    $151.05
    Out of stock
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  1. AR-15 13 items
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  2. AR-15 Assembled Upper Receiver 1 item
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  8. Bolt Carrier Group 6 items
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  13. Compensator 1 item
  14. Flash Hider 8 items
  15. Forearm Accesory 1 item
  16. Handguard 3 items
  17. Muzzle Brake 3 items
  18. Rail Adapter 1 item
  19. Stock 6 items
  20. Trigger 3 items
Rail Length
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  10. 12.5" 1 item
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