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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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  2. Ballistic Advantage BA-10 Upper Receiver
    Ballistic Advantage BA-10 Upper Receiver
    $142.50
    Out of stock
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  3. Rainier Arms Exclusive Spinta Precision .223 Wylde Dissipator AR-15 Barrel - 16" (Rainier Arms Exclusive)
    Spinta Precision .223 Wylde Dissipator AR-15 Barrel - 16" (Rainier Arms Exclusive)
    Special Price $149.99 Regular Price $199.99
    Out of stock
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  5. Geissele Super 7.62 Charging Handle - Black
    Geissele Super 7.62 Charging Handle - Black
    $140.00
    Out of stock
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  6. Sons of Liberty Gun Works Stripped Upper Receiver
    Sons of Liberty Gun Works Stripped Upper Receiver
    $142.50
    Out of stock
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  7. Gear Head Works Tailhook Mod 1 MP5K Folding Arm
    Gear Head Works Tailhook Mod 1 MP5K Folding Arm
    $141.70
    Out of stock
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  11. JP Enterprises Enhanced Bolt - 6.5 Grendel
    JP Enterprises Enhanced Bolt - 6.5 Grendel
    $142.45
    Out of stock
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  12. V Seven Weapon Systems Heavy Buffer Tube - Carbine
    V Seven Weapon Systems Heavy Buffer Tube - Carbine
    $143.56
    Out of stock
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  15. Reptilia Corp RECC-E AR-15/M16 Carbine Stock
    Reptilia Corp RECC-E AR-15/M16 Carbine Stock
    Out of stock
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Items 1-16 of 27

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  1. Price $140.00 - $149.99 Remove This Item
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Barrel Length
  1. 7.5" 1 item
  2. 8" 1 item
  3. 10.5" 1 item
  4. 11.5" 1 item
  5. 16" 1 item
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  1. Dissipator 1 item
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  1. .223 Wylde 1 item
  2. 300 Blackout 2 items
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  1. Receiver Parts 4 items
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  1. AR-10 / LR 308 Charging Handle 2 items
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  7. Flash Hider 1 item
  8. Gas Block 1 item
  9. Muzzle Brake 2 items
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  11. Rail Section 1 item
  12. Stock 4 items
  13. Stock Accessory 2 items
  14. Stock Adapter 1 item
  15. Trigger 1 item
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  1. Out of stock 27 items Remove This Item
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