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. Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 16"
    Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 16"
    $855.00
  2. Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 13.7"
    Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 13.7"
    $950.00
  3. Kratos Design Group Tenderizer M-LOK Barricade Stop
    Kratos Design Group Tenderizer M-LOK Barricade Stop
    $63.95
  4. Bravo Company MFG (BCM) Raider M10 M-LOK Handguard - 10"
    Bravo Company MFG (BCM) Raider M10 M-LOK Handguard - 10"
    $239.00
  5. B5 Systems M-LOK Vertical Foregrip - Flecktarn
    B5 Systems M-LOK Vertical Foregrip - Flecktarn
    $27.55
  6. Noveske Reversible M-LOK Handstop - FDE
    Noveske Reversible M-LOK Handstop - FDE
    $55.00
  7. Noveske Reversible M-LOK Handstop
    Noveske Reversible M-LOK Handstop
  8. Knight's Armament Company (KAC) M-LOK Index Stop
    Knight's Armament Company (KAC) M-LOK Index Stop
    $62.37
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