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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. Lewis Machine & Tool (LMT) AR-15 MRP-L M-LOK Shovelnose Monolithic Upper Receiver - 11.5"
    Lewis Machine & Tool (LMT) AR-15 MRP-L M-LOK Shovelnose Monolithic Upper Receiver - 11.5"
    $845.10
    Out of stock
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  2. Driven Arms Co. Modular Foregrip
    Driven Arms Co. Modular Foregrip
    $34.95
    Out of stock
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  3. Knight's Armament Company (KAC) URX 4 AR-15 M-LOK Handguard - 10.75"
    Knight's Armament Company (KAC) URX 4 AR-15 M-LOK Handguard - 10.75"
    $284.13
    Out of stock
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  4. Drew Meyer Defense Talon Micro M-LOK Handstop - Black
    Drew Meyer Defense Talon Micro M-LOK Handstop - Black
    $19.95
    Out of stock
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  5. Bravo Company MFG (BCM) MK2 Standard Complete Upper W/RAIDER-M13 Handguard
    Bravo Company MFG (BCM) MK2 Standard Complete Upper W/RAIDER-M13 Handguard
    Out of stock
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  6. JMAC Customs TAB M-LOK Forward Grip with Cable Management
    JMAC Customs TAB M-LOK Forward Grip with Cable Management
    $71.96
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  7. Emissary Development M-LOK Handbrake Mini
    Emissary Development M-LOK Handbrake Mini
    Out of stock
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  8. Centurion Arms C4 M-Lok Handguard - Midlength Cutout
    Centurion Arms C4 M-Lok Handguard - Midlength Cutout
    $314.00
    Out of stock
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  9. Drew Meyer Defense Mod 2 Chopstop M-LOK Handstop - Black
    Drew Meyer Defense Mod 2 Chopstop M-LOK Handstop - Black
    $34.95
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  10. Noveske AR-15 M-LOK Rail NSR
    Noveske AR-15 M-LOK Rail NSR
    Out of stock
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