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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. Hera Arms Triarii for Glock 19 Black
    Hera Arms Triarii for Glock 19 Black
    $379.05
    Out of stock
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  2. L2D Combat Catalyst Stripped Slide for Glock 17 Gen 3 - DLC Black
    L2D Combat Catalyst Stripped Slide for Glock 17 Gen 3 - DLC Black
    Special Price $335.99 Regular Price $480.00
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  3. 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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  4. True Precision Stripped Slide For Glock 43 w/ RMSc Cut - Black DLC
    True Precision Stripped Slide For Glock 43 w/ RMSc Cut - Black DLC
    $375.25
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  5. 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
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  6. Ribbons Free Good Swampfox Wolverine Stripped Slide For Glock 19 Gen 3 w/ Mid Height Sights - Graphite Black
    Swampfox Wolverine Stripped Slide For Glock 19 Gen 3 w/ Mid Height Sights - Graphite Black
    $309.00
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  7. 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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  8. Mischief Machine Commander Sig Sauer P365 Grip Module - Standard
    Mischief Machine Commander Sig Sauer P365 Grip Module - Standard
    $395.00
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  9. 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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  10. Rainier Arms Exclusive Spinta Precision Allegiance Slide for Glock 17L Gen 3 (Rainier Arms Exclusive)
    Spinta Precision Allegiance Slide for Glock 17L Gen 3 (Rainier Arms Exclusive)
    Special Price $318.50 Regular Price $400.00
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  11. Empire Ronin Top Cover for B&T TP9 - Black
    Empire Ronin Top Cover for B&T TP9 - Black
    $324.99
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  12. L2D Combat Tyton Stripped Slide for Glock 17 - DLC Black
    L2D Combat Tyton Stripped Slide for Glock 17 - DLC Black
    Out of stock
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  13. L2D Combat Tyton Stripped Slide For Glock 19 Gen 5 - DLC Black
    L2D Combat Tyton Stripped Slide For Glock 19 Gen 5 - DLC Black
    Special Price $314.99 Regular Price $450.00
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  14. Shalotek FLEX Sig Sauer P365 XLR-17 Macro Grip Module
    Shalotek FLEX Sig Sauer P365 XLR-17 Macro Grip Module
    Out of stock
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  15. Agency Arms Sig P320 Compact Premier Line Threaded Barrel - SS
    Agency Arms Sig P320 Compact Premier Line Threaded Barrel - SS
    $310.00
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  16. Mischief Machine Sig Sauer P320 Grip Module - X Compact
    Mischief Machine Sig Sauer P320 Grip Module - X Compact
    $365.00
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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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