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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. 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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  2. Tactical Development Tactical Rail For Sig Sauer P365XL
    Tactical Development Tactical Rail For Sig Sauer P365XL
    $42.30
    Out of stock
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  3. 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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  4. Killer Innovations Velocity V1 Stripped Slide For Sig 365 XL
    Killer Innovations Velocity V1 Stripped Slide For Sig 365 XL
    Out of stock
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  5. L2D Combat P320 X-Compact Precision Match 9mm Barrel - 3.6"
    L2D Combat P320 X-Compact Precision Match 9mm Barrel - 3.6"
    Out of stock
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  6. Sig Sauer X-RAY3 Day/Night Sights
    Sig Sauer X-RAY3 Day/Night Sights
    $99.99
    Out of stock
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  7. 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
    Out of stock
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  8. Sig Sauer Grip Module Assembly P320 AXG - Black Medium (G10 Grip Panels)
    Sig Sauer Grip Module Assembly P320 AXG - Black Medium (G10 Grip Panels)
    Special Price $337.99 Regular Price $399.99
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  9. Tyrant Design Sig Sauer P365 Slide Cap
    Tyrant Design Sig Sauer P365 Slide Cap
    Out of stock
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  10. Agency Arms Sig P320 Compact Premier Line Threaded Barrel - SS
    Agency Arms Sig P320 Compact Premier Line Threaded Barrel - SS
    $310.00
    Out of stock
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  11. Mischief Machine Commander Sig Sauer P365 Grip Module - XXL
    Mischief Machine Commander Sig Sauer P365 Grip Module - XXL
    $409.00
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  12. ShaloTek Sig Sauer P320 Compact Integrally Compensated RMR Slide - Sentinel
    ShaloTek Sig Sauer P320 Compact Integrally Compensated RMR Slide - Sentinel
    $280.00
    Out of stock
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  13. Rainier Arms Exclusive ShaloTek Sig Sauer P320 Compact Integrally Compensated RMR Slide - Sentinel LoPro
    ShaloTek Sig Sauer P320 Compact Integrally Compensated RMR Slide - Sentinel LoPro
    $275.00
    Out of stock
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  14. Mischief Machine Commander Sig Sauer P365 Grip Module - Standard
    Mischief Machine Commander Sig Sauer P365 Grip Module - Standard
    $395.00
    Out of stock
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  15. ShaloTek Sig Sauer P320 Compact Integrally Compensated RMSC Slide - Sentinel
    ShaloTek Sig Sauer P320 Compact Integrally Compensated RMSC Slide - Sentinel
    $280.00
    Out of stock
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  16. ShaloTek Sig Sauer P365 RMSc Slide - Sentinel
    ShaloTek Sig Sauer P365 RMSc Slide - Sentinel
    $266.00
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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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