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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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Items 17-32 of 43

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  3. Faxon Firearms AR-15 9mm FX916-U Complete Upper -16"
    Faxon Firearms AR-15 9mm FX916-U Complete Upper -16"
    $506.00
    Out of stock
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  4. Faxon Firearms Light Tapered 9mm AR-15 Barrel - 16"
    Faxon Firearms Light Tapered 9mm AR-15 Barrel - 16"
    $133.40
    Out of stock
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  8. Faxon Firearms PENCIL .308 Win AR-10/LR308 Barrel - 16"
    Faxon Firearms PENCIL .308 Win AR-10/LR308 Barrel - 16"
    $238.28
    Out of stock
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  10. Troy Industries Ambidextrous Magazine Release
    Troy Industries Ambidextrous Magazine Release
    $58.00
    Out of stock
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  11. Stag Arms A2 Pistol Grip
    Stag Arms A2 Pistol Grip
    $3.50
    Out of stock
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  12. VLTOR Flash Hider - VC:A2
    VLTOR Flash Hider - VC:A2
    $54.86
    Out of stock
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  13. Young Mfg Aluminum Railed Gas Block - .750
    Young Mfg Aluminum Railed Gas Block - .750
    $39.00
    Out of stock
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  14. Young Mfg National Match LITE Bolt Carrier Group
    Young Mfg National Match LITE Bolt Carrier Group
    $265.00
    Out of stock
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  15. VLTOR 6 Position Receiver Extension - RE-10
    VLTOR 6 Position Receiver Extension - RE-10
    $49.46
    Out of stock
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  16. VLTOR 7 Position Receiver Extension - A5
    VLTOR 7 Position Receiver Extension - A5
    $49.46
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Items 17-32 of 43

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  1. Barrel Length 16" Remove This Item
  2. Price $0.00 - $999.99 Remove This Item
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  1. Dissipator 2 items
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Caliber
  1. .223/5.56 1 item
  2. .223 Wylde 6 items
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  4. .308 Win 6 items
  5. .458 Socom 1 item
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  8. 5.56 NATO 13 items
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  11. 9mm 5 items
Category
  1. Receiver Parts 9 items
  2. Parts & Kits 2 items
  3. Barrels 25 items
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  9. $800.00 and above 4 items
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  1. AR-10/LR308 Barrel 3 items
  2. AR-15 Barrel 17 items
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  9. End Plate 1 item
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  11. Patch 1 item
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  1. 9 Slot 9 items
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  5. 11/16x24 1 item
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  1. Yes 2 items
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  1. 1:3 2 items
  2. 1:7 9 items
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