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. Lantac GB750-S Ultra Low Profile Gas Block
    Lantac GB750-S Ultra Low Profile Gas Block
    $62.99
  2. Surefire PROCOMP Muzzle Brake for AR10/LR308 7.62mm
    Surefire PROCOMP Muzzle Brake for AR10/LR308 7.62mm
    $89.00
  3. Magpul M-LOK Aluminum Rail Section
    Magpul M-LOK Aluminum Rail Section
  4. V Seven Weapon Systems Heavy Buffer Tube - Carbine
    V Seven Weapon Systems Heavy Buffer Tube - Carbine
    $143.56
  5. SLR M-LOK RAIL SECTION
    SLR M-LOK RAIL SECTION
  6. Tyrant Designs MOD Grip Chevron Black
    Tyrant Designs MOD Grip Chevron Black
  7. Tyrant Designs MOD Standard Grip Medium
    Tyrant Designs MOD Standard Grip Medium
    $104.35
  8. Bootleg Adjustable AR-15 Complete Bolt Carrier Group
    Bootleg Adjustable AR-15 Complete Bolt Carrier Group
    $199.95
  9. Hera Arms Side Folding Unit (SFU)
    Hera Arms Side Folding Unit (SFU)
    $119.00
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