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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 49-60 of 60

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  1. 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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  2. Drew Meyer Defense Mod 1 Chopstop M-LOK Handstop - Black
    Drew Meyer Defense Mod 1 Chopstop M-LOK Handstop - Black
    $34.95
    Out of stock
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  3. Knight's Armament Company (KAC) M-LOK Index Stop
    Knight's Armament Company (KAC) M-LOK Index Stop
    $62.37
    Out of stock
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  4. Noveske Barricade Support M-LOK Direct Attach
    Noveske Barricade Support M-LOK Direct Attach
    $52.25
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  5. Noveske AR-15 N4 5.56 NATO SPR Upper - 18"
    Noveske AR-15 N4 5.56 NATO SPR Upper - 18"
    $1,543.75
    Out of stock
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  6. Noveske Reversible M-LOK Handstop - Black
    Noveske Reversible M-LOK Handstop - Black
    $52.25
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  7. Maxim Defense MDX 508 300 BLK Mil-Spec Complete Upper - 8.5"
    Maxim Defense MDX 508 300 BLK Mil-Spec Complete Upper - 8.5"
    Out of stock
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  8. 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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  9. Driven Arms Co. Modular Foregrip
    Driven Arms Co. Modular Foregrip
    $34.95
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  10. 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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  11. Daniel Defense DD4 RIII Complete Upper Receiver - 16" Black
    Daniel Defense DD4 RIII Complete Upper Receiver - 16" Black
    $1,499.00
    Out of stock
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  12. Lewis Machine & Tool (LMT) MRP-H M-LOK Monolithic Upper Receiver - 15.3"
    Lewis Machine & Tool (LMT) MRP-H M-LOK Monolithic Upper Receiver - 15.3"
    $1,259.10
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Items 49-60 of 60

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  1. $0.00 - $999.99 51 items
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