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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. Noveske Super Badass Ambi Charging Handle 7.62 Black
    Noveske Super Badass Ambi Charging Handle 7.62 Black
    $133.00
    Out of stock
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  2. Noveske Enhanced Bolt Carrier Group
    Noveske Enhanced Bolt Carrier Group
    $185.25
    Out of stock
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  8. Noveske QD End Plate
    Noveske QD End Plate
    $28.50
    Out of stock
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  13. Noveske Reversible M-LOK Handstop - FDE
    Noveske Reversible M-LOK Handstop - FDE
    $55.00
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  14. Noveske Reversible M-LOK Handstop
    Noveske Reversible M-LOK Handstop
    Out of stock
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Barrel Length
  1. 7.94" 1 item
  2. 10.5" 5 items
  3. 12.5" 3 items
  4. 13.7" 2 items
  5. 14.5" 6 items
  6. 16" 4 items
  7. 16.1" 2 items
  8. 18" 6 items
  9. 20" 1 item
Barrel Profile
  1. MK12 SPR 1 item
Caliber
  1. .308 1 item
  2. 300 Blackout 3 items
  3. 5.56 NATO 25 items
  4. 5.56mm 1 item
  5. 7.62mm 1 item
  6. 7.62x51 1 item
  7. 9mm 1 item
Category
  1. Receiver Parts 10 items
  2. Parts & Kits 3 items
  3. Barrels 20 items
  4. Gas Systems 2 items
  5. Muzzle Devices 7 items
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  9. Rifle Handguards 8 items
  10. Stocks & Braces 1 item
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  1. .625" 2 items
  2. .750" 23 items
  3. .875" 1 item
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  1. AR-15 30 items
Price
  1. $0.00 - $999.99 53 items
  2. $1,000.00 and above 6 items
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  1. Accessory 1 item
  2. AR-10 / LR 308 Charging Handle 1 item
  3. AR-15 Assembled Upper Receiver 1 item
  4. AR-15 Barrel 20 items
  5. AR-15 Charging Handle 1 item
  6. AR-15 Complete Lower Receiver 1 item
  7. AR-15 Complete Upper Receiver 6 items
  8. AR-15 Handguard 6 items
  9. AR-15 Receiver Set 1 item
  10. AR-15 Stripped Lower Receiver 1 item
  11. Bolt Carrier Group 2 items
  12. Charging Handle 1 item
  13. Dust Cover 1 item
  14. End Plate 1 item
  15. Flash Hider 4 items
  16. Forward Assist 1 item
  17. Gas Block 2 items
  18. Handguard 2 items
  19. Handstop 3 items
  20. Muzzle Brake 3 items
  21. Muzzle Device Accessory 1 item
  22. Port Door 1 item
  23. Take Down / Pivot Pins 1 item
Rail Length
  1. 7" 2 items
  2. 7.2" 2 items
  3. 9" 1 item
  4. 9.15" 2 items
  5. 9.75" 1 item
  6. 11" 1 item
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  10. 15" 6 items
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  1. 9 Slot 3 items
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  1. 1/2x28 (.22 cal) 28 items
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Threaded
  1. Yes 5 items
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  1. 1:7 25 items
  2. 1:8 1 item
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  1. In stock 29 items
  2. Out of stock 30 items
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