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. Lewis Machine & Tool .308 Piston Bolt Carrier Group
    Lewis Machine & Tool .308 Piston Bolt Carrier Group
    $685.80
  2. Kratos Design Group Tenderizer M-LOK Barricade Stop
    Kratos Design Group Tenderizer M-LOK Barricade Stop
    $63.95
  3. Rainier Arms A-DAC-F AR-15 Stripped Lower Receiver
    Rainier Arms A-DAC-F AR-15 Stripped Lower Receiver
    $140.00
  4. A3 Tactical Xeno True90 AR-15 Pistol Grip
    A3 Tactical Xeno True90 AR-15 Pistol Grip
    $33.20
  5. Bravo Company MFG (BCM) Raider M10 M-LOK Handguard - 10"
    Bravo Company MFG (BCM) Raider M10 M-LOK Handguard - 10"
    $239.00
  6. Gear Head Works Tailhook Mod 1C Brace – Black
    Gear Head Works Tailhook Mod 1C Brace – Black
    $133.25
  7. Radian Weapons Vertex Trigger - Flat Bow
    Radian Weapons Vertex Trigger - Flat Bow
    $229.95
  8. JK Armament 155 HD Thread Mount - 1/2x28
    JK Armament 155 HD Thread Mount - 1/2x28
    $90.00
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