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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. SB Tactical FS1913 Folding Brace Aluminum Strut
    SB Tactical FS1913 Folding Brace Aluminum Strut
    $199.99
  2. Aeroknox AX // 15 Handguard M-LOK
    Aeroknox AX // 15 Handguard M-LOK
  3. Geissele Super Stabby Bayonet Mount
    Geissele Super Stabby Bayonet Mount
  4. Midwest Industries MCX Virtus M-LOK Handguard
    Midwest Industries MCX Virtus M-LOK Handguard
  5. Angstadt Arms Ultralight M-LOK Handguard
    Angstadt Arms Ultralight M-LOK Handguard
  6. Chisel Machining Marlin Lever Action Aluminum Handguard
    Chisel Machining Marlin Lever Action Aluminum Handguard
    $199.00
  7. Aero Precision AR15 Enhanced Carbine Buffer Kit - H3
    Aero Precision AR15 Enhanced Carbine Buffer Kit - H3
    $114.99
  8. Reptilia Corp RECC-E AR-15/M16 Carbine Stock
    Reptilia Corp RECC-E AR-15/M16 Carbine Stock
  9. Rainier Arms Forged Mil-Spec Upper Receiver
    Rainier Arms Forged Mil-Spec Upper Receiver
    $125.00
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