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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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  2. Ballistic Advantage Hanson 300BLK AR-15 Barrel - 8.3"
    Ballistic Advantage Hanson 300BLK AR-15 Barrel - 8.3"
    $199.50
    Out of stock
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  8. Faxon Firearms PENCIL .308 Win AR-10/LR308 Barrel - 16"
    Faxon Firearms PENCIL .308 Win AR-10/LR308 Barrel - 16"
    $238.28
    Out of stock
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  13. JK Armament 155 HD Bald Eagle Compensator - 5/8x24
    JK Armament 155 HD Bald Eagle Compensator - 5/8x24
    $99.00
    Out of stock
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Items 17-32 of 68

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  1. Thread Pitch 5/8x24 (.30 cal) Remove This Item
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  3. Muzzle Devices 15 items
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  1. .750" 20 items
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  1. Pistol 9 items
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  17. Rainier Arms, LLC 25 items
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  1. AR-10 1 item
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  1. AR-10/LR308 9 items
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  6. Steyr Aug 1 item
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  1. $0.00 - $999.99 65 items
  2. $1,000.00 and above 3 items
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  1. AR-10/LR308 Barrel 10 items
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