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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. Arms Republic 9mm Compensator for CZ P-10 - Black
    Arms Republic 9mm Compensator for CZ P-10 - Black
    $59.95
    Out of stock
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  2. Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19
    Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19
    $78.20
    Out of stock
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  3. Faxon Firearms EXOS-515 Pistol Compensator for Sig Sauer P320
    Faxon Firearms EXOS-515 Pistol Compensator for Sig Sauer P320
    $78.20
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  4. Agency Arms Sig P320 Dual Port Compensator - Black
    Agency Arms Sig P320 Dual Port Compensator - Black
    $100.00
    Out of stock
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  5. Arms Republic 9mm Compensator for Glock Gen 3 - Black
    Arms Republic 9mm Compensator for Glock Gen 3 - Black
    $59.95
    Out of stock
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  6. Faxon Firearms EXOS-525 Pistol Compensator for Sig Sauer P365/P365XL
    Faxon Firearms EXOS-525 Pistol Compensator for Sig Sauer P365/P365XL
    $78.20
    Out of stock
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  7. Faxon Firearms EXOS-553 Pistol Compensator for Glock Gen 5
    Faxon Firearms EXOS-553 Pistol Compensator for Glock Gen 5
    $78.20
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  8. Killer Innovations Velocity CZ P-10C Compensator
    Killer Innovations Velocity CZ P-10C Compensator
    Out of stock
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  9. Killer Innovations Sig P320 Compensator
    Killer Innovations Sig P320 Compensator
    Out of stock
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  10. Agency Arms Sig P320 Single Port Compensator - Black
    Agency Arms Sig P320 Single Port Compensator - Black
    $100.00
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  11. Apex Tactical Specialties FN FNX-45 MRat Compensator - Black
    Apex Tactical Specialties FN FNX-45 MRat Compensator - Black
    $166.25
    Out of stock
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  12. Apex Tactical Specialties FN FNX-45 MRat Compensator - FDE
    Apex Tactical Specialties FN FNX-45 MRat Compensator - FDE
    $190.00
    Out of stock
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  13. Springer Precision Sig P320 9mm Open Compensator (M13.5 x 1 LH)
    Springer Precision Sig P320 9mm Open Compensator (M13.5 x 1 LH)
    $95.00
    Out of stock
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  14. Tyrant Designs T-Comp Sig Sauer P320
    Tyrant Designs T-Comp Sig Sauer P320
    Out of stock
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  15. Tyrant Designs Uni-Comp Universal 9mm Compensator
    Tyrant Designs Uni-Comp Universal 9mm Compensator
    Out of stock
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  16. HB Industries 9mm Micro Comp and Thread Protector
    HB Industries 9mm Micro Comp and Thread Protector
    $34.65
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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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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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