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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 Glock 48 Mid Line Threaded/Fluted Barrel
    Agency Arms Glock 48 Mid Line Threaded/Fluted Barrel
    $210.00
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  3. Killer Innovations Sancer 9mm Threaded Barrel for Glock 17 Gen 5
    Killer Innovations Sancer 9mm Threaded Barrel for Glock 17 Gen 5
    $139.92
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  4. Killer Innovations Sancer 9mm Threaded Barrel for Glock 17 Gen 1-4
    Killer Innovations Sancer 9mm Threaded Barrel for Glock 17 Gen 1-4
    $139.92
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  5. Agency Arms Syndicate Barrel For Glock 43
    Agency Arms Syndicate Barrel For Glock 43
    $160.00
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  6. Agency Arms Syndicate Threaded Barrel For Glock 43
    Agency Arms Syndicate Threaded Barrel For Glock 43
    $170.00
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  7. True Precision Sig Sauer P365XL X-Fluted Match Grade Barrel
    True Precision Sig Sauer P365XL X-Fluted Match Grade Barrel
    $161.49 - $180.49
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  8. Agency Arms Sig P320 Compact Mid Line Barrel
    Agency Arms Sig P320 Compact Mid Line Barrel
    $200.00
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  9. Agency Arms Syndicate Non-Threaded Barrel For Glock 19
    Agency Arms Syndicate Non-Threaded Barrel For Glock 19
    $160.00
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  10. Agency Arms Premier Line Fluted Barrel For Glock 17
    Agency Arms Premier Line Fluted Barrel For Glock 17
    $300.00
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  11. Agency Arms Premier Line Fluted Barrel For Glock 19
    Agency Arms Premier Line Fluted Barrel For Glock 19
    $300.00
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  12. Agency Arms Premier Line Threaded/Fluted Barrel for Glock 17
    Agency Arms Premier Line Threaded/Fluted Barrel for Glock 17
    $310.00
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  13. Agency Arms Premier Line Threaded/Fluted Barrel For Glock 19
    Agency Arms Premier Line Threaded/Fluted Barrel For Glock 19
    $310.00
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  14. Agency Arms Sig P320 Compact Premier Line Threaded Barrel
    Agency Arms Sig P320 Compact Premier Line Threaded Barrel
    $310.00
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  15. Agency Arms Sig P320 Compact Premier Line Barrel
    Agency Arms Sig P320 Compact Premier Line Barrel
    $300.00
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  16. True Precision Sig P320 Compact 3.9" Non-Threaded Barrel
    True Precision Sig P320 Compact 3.9" Non-Threaded Barrel
    $180.49 - $199.49
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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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Barrel Length
  1. 3.9" 4 items
  2. 5" 1 item
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  1. 9mm 20 items
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  1. Mid Line 1 item
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  5. P320 2 items
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  1. Agency Arms 12 items
  2. Danger Close Armament 3 items
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  4. True Precision 2 items
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  1. CZ P-10 1 item
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  2. Sig Sauer 6 items
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  1. $100.00 - $199.99 8 items
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  3. $300.00 and above 6 items
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  1. Barrel 20 items
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  1. 1/2x28 10 items
Threaded
  1. Yes 5 items
  2. No 6 items
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  1. In stock 16 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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