raineirarms

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. Aeroknox Butterfly Brake .223/5.56
    Aeroknox Butterfly Brake .223/5.56
    $90.00
  2. Griffin Armament EZ Brake .223/5.56 - 1/2x28
    Griffin Armament EZ Brake .223/5.56 - 1/2x28
    $79.95
  3. Hera Arms LC-S Linear Compensator-Small
    Hera Arms LC-S Linear Compensator-Small
    $69.00
  4. Fortis MFG Muzzle Brake 5.56
    Fortis MFG Muzzle Brake 5.56
  5. Faxon Firearms GUNNER 5.56 3-Port Muzzle Brake
    Faxon Firearms GUNNER 5.56 3-Port Muzzle Brake
    $55.19
  6. Faxon Firearms Pencil .223 Wylde AR-15 Barrel - 14.5"
    Faxon Firearms Pencil .223 Wylde AR-15 Barrel - 14.5"
    $211.60
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