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. Aero Precision AR15 Enhanced Carbine Buffer Tube Kit - H2
    Aero Precision AR15 Enhanced Carbine Buffer Tube Kit - H2
    $104.99
  2. Rise Armament .223/5.56 Bolt Carrier Group - Nickel Boron
    Rise Armament .223/5.56 Bolt Carrier Group - Nickel Boron
    $179.99
  3. Sig Sauer TREAD Vertical M-LOK Grip Kit
    Sig Sauer TREAD Vertical M-LOK Grip Kit
    Special Price $37.99 Regular Price $49.99
  4. Surefire Socom 5.56mm 4-Prong Flash Hider - 1/2x28
    Surefire Socom 5.56mm 4-Prong Flash Hider - 1/2x28
    $179.00
  5. Aeroknox AX // Foregrip - M-LOK
    Aeroknox AX // Foregrip - M-LOK
    $50.00
  6. Ballistic Advantage Lo-Pro Gas Block - .750"
    Ballistic Advantage Lo-Pro Gas Block - .750"
    $28.50
  7. Griffin Armament Taper Mount Minimalist Blast Shield
    Griffin Armament Taper Mount Minimalist Blast Shield
    $84.95
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