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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 Icarus Sig P320 X-Carry Grip Module - Black
    Agency Arms Icarus Sig P320 X-Carry Grip Module - Black
    $520.00
    Out of stock
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  2. Empire Katana Magwell For Sig Sauer P320 X-Series - Tano
    Empire Katana Magwell For Sig Sauer P320 X-Series - Tano
    Out of stock
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  3. Midwest Industries SIG Muzzle Device Collar for MPX 9mm Models
    Midwest Industries SIG Muzzle Device Collar for MPX 9mm Models
    $9.49
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  4. ShaloTek Sig Sauer P365 RMSc Slide - Sentinel
    ShaloTek Sig Sauer P365 RMSc Slide - Sentinel
    $266.00
    Out of stock
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  5. ShaloTek Sig Sauer P365XL RMSc Slide - Sentinel
    ShaloTek Sig Sauer P365XL RMSc Slide - Sentinel
    $270.00
    Out of stock
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  6. ShaloTek Sig Sauer P365 RMSc Slide - Fury
    ShaloTek Sig Sauer P365 RMSc Slide - Fury
    $266.00
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  7. ShaloTek Sig Sauer P365XL RMSc Slide - Fury
    ShaloTek Sig Sauer P365XL RMSc Slide - Fury
    $270.00
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  8. ShaloTek Sig Sauer P365 RMSc Slide - Tracker
    ShaloTek Sig Sauer P365 RMSc Slide - Tracker
    $261.00
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  9. ShaloTek Sig Sauer P365XL RMSc Slide - Tracker
    ShaloTek Sig Sauer P365XL RMSc Slide - Tracker
    $266.00
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  10. ShaloTek Sig Sauer P365XXL RMSc Slide - Tracker
    ShaloTek Sig Sauer P365XXL RMSc Slide - Tracker
    $270.00
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  11. Mischief Machine Commander Sig Sauer P365 Grip Module - X Macro
    Mischief Machine Commander Sig Sauer P365 Grip Module - X Macro
    $429.00
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  12. Sharps Bros 365XL - Improved RMSC Optic Ready & Integrated Comp Slide for Sig P365X
    Sharps Bros 365XL - Improved RMSC Optic Ready & Integrated Comp Slide for Sig P365X
    $381.85
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  13. Norsso Sig Sauer P320SC Sub/X-Compact pBentham RMR Slide - Black DLC
    Norsso Sig Sauer P320SC Sub/X-Compact pBentham RMR Slide - Black DLC
    $369.55
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  14. Norsso Sig Sauer P320SC Sub/X-Compact Reptile RMR Slide - Black DLC
    Norsso Sig Sauer P320SC Sub/X-Compact Reptile RMR Slide - Black DLC
    $417.05
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  15. Sig Sauer P238 .380ACP Legion Magazine - 7rd
    Sig Sauer P238 .380ACP Legion Magazine - 7rd
    Special Price $43.99 Regular Price $49.99
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  16. Agency Arms Sig P320 X Series Magwell - Black
    Agency Arms Sig P320 X Series Magwell - Black
    $100.00
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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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