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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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  1. V Seven Weapon Systems 6.5 Creedmoor Fluted Stainless Match Barrel - 22"
    V Seven Weapon Systems 6.5 Creedmoor Fluted Stainless Match Barrel - 22"
    $630.50
    Out of stock
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  2. Angstadt Arms 9mm AR-15 Barrel - 6"
    Angstadt Arms 9mm AR-15 Barrel - 6"
    $108.00
    Out of stock
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  3. Centurion Arms Lightweight Hammer Forged 5.56 Barrel - 16"
    Centurion Arms Lightweight Hammer Forged 5.56 Barrel - 16"
    $285.00
    Out of stock
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  4. Centurion Arms Lightweight Hammer Forged 5.56 Barrel - 11.5"
    Centurion Arms Lightweight Hammer Forged 5.56 Barrel - 11.5"
    $285.00
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  5. Ballistic Advantage Modern Series .308 Rifle Barrel-20
    Ballistic Advantage Modern Series .308 Rifle Barrel-20
    $237.50
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  6. Ballistic Advantage 5.5" 9MM AR 15 Barrel CrMoV
    Ballistic Advantage 5.5" 9MM AR 15 Barrel CrMoV
    $99.75
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  7. Ballistic Advantage Premium Series 416R SS 223 Wylde 18" SPR Fluted
    Ballistic Advantage Premium Series 416R SS 223 Wylde 18" SPR Fluted
    $256.50
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  8. Ballistic Advantage Premium Series 416R SS 223 Wylde 16" Fluted
    Ballistic Advantage Premium Series 416R SS 223 Wylde 16" Fluted
    $237.50
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  9. Ballistic Advantage 300 Blackout Hanson Profile - 8.3"
    Ballistic Advantage 300 Blackout Hanson Profile - 8.3"
    $199.50
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  10. Ballistic Advantage Modern Series 5.56 Goverment Barrel - 20"
    Ballistic Advantage Modern Series 5.56 Goverment Barrel - 20"
    $185.25
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  11. Ballistic Advantage Modern Series 300BLK Barrel - 9"
    Ballistic Advantage Modern Series 300BLK Barrel - 9"
    $152.00
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  12. Ballistic Advantage Modern Series 5.56 NATO Government Profile Barrel - 11.5"
    Ballistic Advantage Modern Series 5.56 NATO Government Profile Barrel - 11.5"
    $147.25
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  13. Ballistic Advantage Modern Series 5.56 NATO Barrel - 10.5"
    Ballistic Advantage Modern Series 5.56 NATO Barrel - 10.5"
    $142.50
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  14. Ballistic Advantage Modern Series 5.56 SPR Barrel - 18"
    Ballistic Advantage Modern Series 5.56 SPR Barrel - 18"
    $175.75
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  15. Ballistic Advantage Modern Series 5.56 Government Profile Midlength AR 15 Barrel - 14.5"
    Ballistic Advantage Modern Series 5.56 Government Profile Midlength AR 15 Barrel - 14.5"
    $161.50
    Out of stock
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  16. Ballistic Advantage Modern Series 300BLK Barrel - 10.5"
    Ballistic Advantage Modern Series 300BLK Barrel - 10.5"
    $156.75
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