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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. 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
    Out of stock
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  2. 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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  3. Norsso Sig Sauer P320C Reptile Ported RMR Slide - Black DLC
    Norsso Sig Sauer P320C Reptile Ported RMR Slide - Black DLC
    $436.05
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  4. Agency Arms Sig P320 Compact/X-Carry Syndicate S1 Field Slide - DLC
    Agency Arms Sig P320 Compact/X-Carry Syndicate S1 Field Slide - DLC
    $575.00
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  5. Agency Arms Sig P320 Compact/X-Carry Syndicate S1 Urban AOS Slide
    Agency Arms Sig P320 Compact/X-Carry Syndicate S1 Urban AOS Slide
    $575.00
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  6. Agency Arms Sig P320 Compact/X-Carry Gavel Slide - DLC
    Agency Arms Sig P320 Compact/X-Carry Gavel Slide - DLC
    $825.00
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  7. Agency Arms Sig P320 Compact/X-Carry Syndicate S2 Slide
    Agency Arms Sig P320 Compact/X-Carry Syndicate S2 Slide
    $575.00
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  8. 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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  9. ShaloTek Sig Sauer P320 Compact Integrally Compensated RMSC Slide - Sentinel
    ShaloTek Sig Sauer P320 Compact Integrally Compensated RMSC Slide - Sentinel
    $280.00
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  10. ShaloTek Sig Sauer P365XL RMSc Slide - Sentinel
    ShaloTek Sig Sauer P365XL RMSc Slide - Sentinel
    $270.00
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  11. ShaloTek Sig Sauer P365XL RMSc Slide - Fury
    ShaloTek Sig Sauer P365XL RMSc Slide - Fury
    $270.00
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  12. ShaloTek Sig Sauer P365 RMSc Slide - Tracker
    ShaloTek Sig Sauer P365 RMSc Slide - Tracker
    $261.00
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  13. Norsso Sig Sauer P320 Full-Size Reptile Ported RMR Slide - Black Nitride
    Norsso Sig Sauer P320 Full-Size Reptile Ported RMR Slide - Black Nitride
    $445.55
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  14. Norsso Sig Sauer P320 Sub/X-Compact Vector RMR Slide - Black DLC
    Norsso Sig Sauer P320 Sub/X-Compact Vector RMR Slide - Black DLC
    $417.05
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  15. Rainier Arms Exclusive ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XLC Sentinel LoPro
    ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XLC Sentinel LoPro
    $275.00
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  16. Killer Innovations Velocity Sig P320 Compact MOD1 Stripped Slide
    Killer Innovations Velocity Sig P320 Compact MOD1 Stripped Slide
    Out of stock
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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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