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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. Ballistic Advantage Premium Series 416R SS 6MM ARC Barrel - 20" DMR
    Ballistic Advantage Premium Series 416R SS 6MM ARC Barrel - 20" DMR
    $261.25
    Out of stock
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  9. Knight's Armament Company (KAC) SR-25 Ambidextrous AR-10 Charging Handle
    Knight's Armament Company (KAC) SR-25 Ambidextrous AR-10 Charging Handle
    $267.30
    Out of stock
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  10. LANTAC E-BCG
    LANTAC E-BCG
    $261.99
    Out of stock
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  11. Centurion Arms C4 Rail System - Carbine Cutout Handguard
    Centurion Arms C4 Rail System - Carbine Cutout Handguard
    $266.00
    Out of stock
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  12. Hiperfire HIPERTOUCH ECLipse, AR15/10 Trigger Assembly
    Hiperfire HIPERTOUCH ECLipse, AR15/10 Trigger Assembly
    $261.25
    Out of stock
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  13. 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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  14. Triggertech Adaptable AR Trigger - PVD Black
    Triggertech Adaptable AR Trigger - PVD Black
    Out of stock
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  15. Rainier Arms Ultramatch .308 Billet Upper Receiver MOD 3
    Rainier Arms Ultramatch .308 Billet Upper Receiver MOD 3
    $269.99
    Out of stock
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  16. Aero Precision AR15 M4E1 RECEIVER SET - BLACK
    Aero Precision AR15 M4E1 RECEIVER SET - BLACK
    $269.98
    Out of stock
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