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Parts

Our amazing offer consists of a great variety of AR-10, AR-15, and pistol parts and accessories. Purchase upper receivers, muzzle devices, handguards, BCG, barrels, triggers, magazine extensions, etc., and start modifying your firearm today.

Parts

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  1. Agency Arms Syndicate Threaded Barrel For Glock 43
    Agency Arms Syndicate Threaded Barrel For Glock 43
    $170.00
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  2. Agency Arms Sig P320 Compact Mid Line Threaded Barrel
    Agency Arms Sig P320 Compact Mid Line Threaded Barrel
    $210.00
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  3. Killer Innovations Sig P320 X-Carry Velocity Non-Threaded Barrel
    Killer Innovations Sig P320 X-Carry Velocity Non-Threaded Barrel
    $249.00
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  4. Faxon Firearms Match Series M&P Shield 9mm Barrel
    Faxon Firearms Match Series M&P Shield 9mm Barrel
    $161.00 - $179.40
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  5. Faxon Firearms Match Series M&P Shield 9mm Threaded Barrel
    Faxon Firearms Match Series M&P Shield 9mm Threaded Barrel
    $170.20 - $188.60
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  6. True Precision Springfield Hellcat Non-Threaded Barrel
    True Precision Springfield Hellcat Non-Threaded Barrel
    $161.49 - $180.49
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  8. Killer Innovations Sig P320 X-Compact Velocity Threaded Barrel
    Killer Innovations Sig P320 X-Compact Velocity Threaded Barrel
    $268.00
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  9. True Precision Sig P320 X-Compact 3.6" Threaded Barrel
    True Precision Sig P320 X-Compact 3.6" Threaded Barrel
    $199.49 - $218.49
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  10. True Precision Sig P320 X-Compact 3.6" Non-Threaded Barrel
    True Precision Sig P320 X-Compact 3.6" Non-Threaded Barrel
    $180.49 - $199.49
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  12. Shalotek Sig Sauer P365XXL LCI Fluted Barrel
    Shalotek Sig Sauer P365XXL LCI Fluted Barrel
    $114.00
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  15. Lantac 9INE Fluted/Threaded Barrel For Glock 43
    Lantac 9INE Fluted/Threaded Barrel For Glock 43
    $275.99
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Firearm parts

Rainier Arms is the best place to purchase parts and accessories for your rifle or pistol online, and all that for more than affordable prices. Look no further, you can find here everything that comes to your mind and more! The best manufacturers in the business, like Killer Innovations, Lantac, Next Level Armament, Rainier Arms LLC, Apex Tactical Specialties, and many more are here to offer you their high-quality products. Select your preferred part and make your AR-10, AR-15 or pistol a unique piece of firearm.

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  1. Product Type Barrel Remove This Item
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Barrel Length
  1. 3.1" 2 items
  2. 3.25" 1 item
  3. 3.5" 1 item
  4. 3.54" 1 item
  5. 3.6" 3 items
  6. 3.66" 1 item
  7. 3.7" 4 items
  8. 3.86" 1 item
  9. 3.9" 9 items
  10. 4" 1 item
  11. 4.02" 2 items
  12. 4.37" 1 item
  13. 4.4" 1 item
  14. 4.46" 1 item
  15. 4.5" 1 item
  16. 4.57" 2 items
  17. 4.6" 2 items
  18. 5" 1 item
Barrel Profile
  1. Non-fluted 1 item
Caliber
  1. 9mm 102 items
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Configuration
  1. Gen 3 1 item
  2. Gen 4 1 item
  3. Gen 5 3 items
  4. Mid Line 1 item
  5. G17 9 items
  6. G19 15 items
  7. G26 2 items
  8. G43 7 items
  9. P320 5 items
  10. P365 3 items
  11. P365XL 2 items
Finish
  1. Black 3 items
  2. Black DLC 3 items
  3. Black Nitride 2 items
  4. Bronze 2 items
  5. Chameleon 1 item
  6. DLC 37 items
  7. Gold 4 items
  8. Melonite 1 item
  9. NeoChromatic 1 item
  10. Nitride 8 items
  11. Stainless Steel 1 item
  12. Titanium Nitride 1 item
  13. PVD/CVD 4 items
  14. Titanium Nitride (TiN) 44 items
  15. Molecular Dense Coating (MDC) 13 items
Gas Length
  1. Pistol 1 item
Height
  1. Absolute Co-Witness 1 item
Is Firearms?
  1. No 146 items
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  1. Agency Arms 21 items
  2. Apex Tactical Specialties 2 items
  3. ARC Division 1 item
  4. Battle Arms Development 3 items
  5. CMC Triggers 1 item
  6. Danger Close Armament 7 items
  7. Faction 1 item
  8. Faxon Firearms 17 items
  9. Fortis MFG 2 items
  10. Grey Ghost Precision 3 items
  11. Griffin Armament 9 items
  12. Killer Innovations 25 items
  13. L2D Combat 9 items
  14. Lantac 6 items
  15. Lone Wolf Arms 2 items
  16. Radian Weapons 2 items
  17. S3F Solutions 5 items
  18. Shalotek 3 items
  19. Spinta Precision 1 item
  20. Strike Industries 2 items
  21. True Precision 20 items
  22. Tyrant Designs 3 items
  23. Zaffiri Precision 2 items
Model
  1. CZ P-10 4 items
  2. FNH 509 2 items
  3. Glock 17 26 items
  4. Glock 19 37 items
  5. Glock 19X 1 item
  6. Glock 23 1 item
  7. Glock 26 6 items
  8. Glock 34 1 item
  9. Glock 43 11 items
  10. Glock 45 1 item
  11. Glock 47 1 item
  12. Glock 48 5 items
  13. Sig P320 24 items
  14. Sig P365 9 items
  15. Sig P365XL 7 items
  16. S&W M&P Shield 3 items
  17. Springfield Hellcat 4 items
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  1. Sig Sauer P Series 1 item
  2. CZ 3 items
  3. FNH 2 items
  4. Glock 68 items
  5. Sig Sauer 22 items
  6. Smith & Wesson 3 items
  7. Springfield 2 items
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  2. FNH 2 items
  3. Glock 83 items
  4. Sig Sauer 39 items
  5. Smith & Wesson 3 items
  6. Springfield 4 items
Price
  1. $0.00 - $99.99 7 items
  2. $100.00 - $199.99 82 items
  3. $200.00 - $299.99 48 items
  4. $300.00 and above 9 items
Size
  1. X-Compact 1 item
  2. Compact 1 item
Thread Pitch
  1. 1/2x28 38 items
Threaded
  1. Yes 24 items
  2. No 32 items
Twist Rate
  1. 1:9 1 item
  2. 1:10 56 items
Stock Status
  1. In stock 117 items
  2. Out of stock 29 items
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What are the most common barrel thread patterns for pistols and rifles?

For .22LR, .22MAG, .17HMR, 9mm, and .223/5.56 NATO the most common thread pattern would be 1/2x28, with some exceptions for 9mm and .223/5.56 NATO firearms. As for .308/7.62mm and .338 Lapua Magnum, the thread pattern that is most commonly used is 5/8x24, with a few exceptions. Another typical thread pattern is 9/16x24 and it is mostly used for .40 S&W weapons.

Single triggers or two-stage triggers?

Whichever you choose, you cannot go wrong. The single trigger is fast and simple to use; as soon as you apply a small amount of pressure, the firearm goes off. Two-stage trigger is extremely accurate and you know precisely when the shot is going to be fired. The first stage prepares you for the second one, when the trigger pushes the hammer up causing the firearm to discharge. So, it is up to you to make a choice.

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