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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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  2. Faxon Firearms Gunner 300BLK AR-15 QPQ Barrel - 16"
    Faxon Firearms Gunner 300BLK AR-15 QPQ Barrel - 16"
    $165.60
    Out of stock
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Items 177-178 of 178

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  1. Gas Block Diameter .750" Remove This Item
  2. Platform AR-15 Remove This Item
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Barrel Length
  1. 6" 1 item
  2. 6.5" 1 item
  3. 6.75" 1 item
  4. 7.5" 4 items
  5. 7.75" 1 item
  6. 8" 4 items
  7. 8.3" 1 item
  8. 8.5" 3 items
  9. 9" 2 items
  10. 10" 3 items
  11. 10.3" 2 items
  12. 10.5" 22 items
  13. 10.7" 1 item
  14. 11.5" 9 items
  15. 12" 6 items
  16. 12.3" 1 item
  17. 12.5" 15 items
  18. 13.7" 4 items
  19. 13.9" 3 items
  20. 14.5" 15 items
  21. 16" 42 items
  22. 16.1" 3 items
  23. 18" 28 items
  24. 20" 9 items
Barrel Profile
  1. Dissipator 2 items
  2. DMR 2 items
  3. Lightweight 1 item
  4. MK12 SPR 12 items
Caliber
  1. .22 ARC 2 items
  2. .223 Wylde 34 items
  3. 300 Blackout 29 items
  4. 350 Legend 2 items
  5. 5.56 NATO 76 items
  6. 6mm ARC 19 items
  7. 6.5 Grendel 13 items
  8. 7.62x39 2 items
Category
  1. Receiver Parts 9 items
  2. Barrels 169 items
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Finish
  1. Cerakote 1 item
  2. Nitride 50 items
  3. Polished 12 items
  4. Satin 37 items
  5. Quench Polish Quench (QPQ) 2 items
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  1. Pistol -1 1 item
  2. Pistol 33 items
  3. Carbine 36 items
  4. Mid 57 items
  5. Intermediate 8 items
  6. Rifle 32 items
  7. Rifle +1 3 items
Manufacturer
  1. Andro Corp Industries 1 item
  2. Ballistic Advantage 25 items
  3. Boss Barrels 7 items
  4. Bravo Company MFG (BCM) 1 item
  5. Centurion Arms 3 items
  6. Daniel Defense 4 items
  7. Faxon Firearms 19 items
  8. Geissele 4 items
  9. NEMO Arms 2 items
  10. Noveske 16 items
  11. Rainier Arms, LLC 82 items
  12. Sons of Liberty Gun Works 10 items
  13. Spinta Precision 1 item
  14. VKTR Industries 3 items
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  1. M-LOK 3 items
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  1. $0.00 - $99.99 2 items
  2. $100.00 - $199.99 43 items
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  7. $600.00 - $699.99 5 items
  8. $700.00 - $799.99 1 item
  9. $800.00 and above 2 items
Product Type
  1. AR-15 Barrel 169 items
  2. AR-15 Partial Upper Receiver 7 items
  3. AR-15 Handguard 1 item
  4. AR-15 Upper Receiver Group 1 item
Rail Length
  1. 7" 1 item
  2. 9.5" 1 item
  3. 9.55" 2 items
  4. 10.7" 1 item
  5. 11.7" 2 items
  6. 13.7" 2 items
  7. 15" 2 items
Thread Pitch
  1. 1/2x28 (.22 cal) 112 items
  2. 5/8x24 (.30 cal) 66 items
Threaded
  1. Yes 5 items
  2. No 1 item
Twist Rate
  1. 1:5 2 items
  2. 1:7 94 items
  3. 1:7.5 23 items
  4. 1:8 55 items
  5. 1:10 3 items
Stock Status
  1. In stock 117 items
  2. Out of stock 61 items
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