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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. KNS Precision Bolt Catch Retaining Pin
    KNS Precision Bolt Catch Retaining Pin
    $12.00
  2. AeroKnox Orion AR Grip
    AeroKnox Orion AR Grip
    $90.00
  3. AeroKnox Hook-Stop MLOK
    AeroKnox Hook-Stop MLOK
    $42.50
  4. Angstadt Arms AR-15 0940 Lower Receiver for Glock
    Angstadt Arms AR-15 0940 Lower Receiver for Glock
    $250.00
  5. Angstadt Arms AR-15 0940 Receiver Set for Glock
    Angstadt Arms AR-15 0940 Receiver Set for Glock
    $420.00
  6. Next Level Armament MPX Ambi Charge Handle and Block Kit
    Next Level Armament MPX Ambi Charge Handle and Block Kit
    $109.00
  7. Faxon Firearms PENCIL .308 Win AR-10/LR308 Barrel - 16"
    Faxon Firearms PENCIL .308 Win AR-10/LR308 Barrel - 16"
    $238.28
  8. Rainier Arms Ultramatch .308 Billet Upper Receiver MOD 3
    Rainier Arms Ultramatch .308 Billet Upper Receiver MOD 3
    $269.99
  9. Lantac N15 Raven Billet Receiver Set
    Lantac N15 Raven Billet Receiver Set
    $458.99
  10. Lantac SF15 USR FORGED UPPER & LOWER SET
    Lantac SF15 USR FORGED UPPER & LOWER SET
    $305.98
  11. KNS Precision Perma Pin
    KNS Precision Perma Pin
    $10.00
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