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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 Sig P320 Compact/X-Carry Gavel Slide - DLC
    Agency Arms Sig P320 Compact/X-Carry Gavel Slide - DLC
    $825.00
    Out of stock
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  2. Agency Arms Sig P320 Single Port Compensator - Black
    Agency Arms Sig P320 Single Port Compensator - Black
    $100.00
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  3. Agency Arms Sig P320 Compact/X-Carry Syndicate S2 Slide
    Agency Arms Sig P320 Compact/X-Carry Syndicate S2 Slide
    $575.00
    Out of stock
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  4. Grayguns Sig Sauer P320 X-Five Laser-Sculpted Grip Module - TXG Tungsten-Infused
    Grayguns Sig Sauer P320 X-Five Laser-Sculpted Grip Module - TXG Tungsten-Infused
    $379.00
    Out of stock
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  5. Tactical Development Pro Ledge TLR7 SUB Rail for SIG P365/X/XL - Right Hand
    Tactical Development Pro Ledge TLR7 SUB Rail for SIG P365/X/XL - Right Hand
    $28.80
    Out of stock
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  6. Tactical Development Tactical Rail For Sig Sauer P365XL
    Tactical Development Tactical Rail For Sig Sauer P365XL
    $42.30
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  7. Tactical Development Dual Enhanced Flat Trigger For Sig Sauer P365
    Tactical Development Dual Enhanced Flat Trigger For Sig Sauer P365
    Out of stock
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  8. Mischief Machine Sig Sauer P320 Grip Module - X Compact
    Mischief Machine Sig Sauer P320 Grip Module - X Compact
    $365.00
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  9. Mischief Machine P320 Grip Module - X Compact w/ Safety
    Mischief Machine P320 Grip Module - X Compact w/ Safety
    $365.00
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  10. Shalotek Sig Sauer P365XL LCI Barrel - Black Nitride
    Shalotek Sig Sauer P365XL LCI Barrel - Black Nitride
    $99.00
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  11. Rainier Arms Exclusive ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XC Sentinel LoPro
    ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XC Sentinel LoPro
    $270.00
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  12. ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XXLC Sentinel
    ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XXLC Sentinel
    $285.00
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  13. ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XLC Sentinel
    ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XLC Sentinel
    $280.00
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  14. 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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  15. Rainier Arms Exclusive ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XXLC Sentinel LoPro
    ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XXLC Sentinel LoPro
    $280.00
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  16. ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XC Sentinel
    ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XC Sentinel
    $275.00
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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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