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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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8 Items

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  1. V Seven Weapon Systems Carbine Buffer Tube
    V Seven Weapon Systems Carbine Buffer Tube
    $63.05
  2. V Seven Weapon Systems Heavy Buffer Tube - Carbine
    V Seven Weapon Systems Heavy Buffer Tube - Carbine
    $143.56
  3. V Seven Weapon Systems Heavy Steel .308 & A5 Buffer Tube
    V Seven Weapon Systems Heavy Steel .308 & A5 Buffer Tube
    $157.14
  4. Milspec/GI M16/Rifle Buffer Tube
    Milspec/GI M16/Rifle Buffer Tube
    $30.00
  5. JMAC Custom ST-6 Skeletonized Tube
    JMAC Custom ST-6 Skeletonized Tube
    $103.46
  6. VLTOR 6 Position Receiver Extension - RE-10
    VLTOR 6 Position Receiver Extension - RE-10
    $49.46
  7. VLTOR 7 Position Receiver Extension - A5
    VLTOR 7 Position Receiver Extension - A5
    $49.46
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8 Items

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