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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. Sig Sauer Grip Module Assembly P365XL Spectre Series Laser Engraved LXG - Gray
    Sig Sauer Grip Module Assembly P365XL Spectre Series Laser Engraved LXG - Gray
    Special Price $79.95 Regular Price $89.99
    Out of stock
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  2. Tyrant Design Sig P365 Extended Slide Release
    Tyrant Design Sig P365 Extended Slide Release
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  3. 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
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  4. Tactical Development Tactical Rail For Sig Sauer P365XL
    Tactical Development Tactical Rail For Sig Sauer P365XL
    $42.30
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  5. Tactical Development Dual Enhanced Flat Trigger For Sig Sauer P365
    Tactical Development Dual Enhanced Flat Trigger For Sig Sauer P365
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  6. Tyrant Designs T-Comp Sig Sauer P320
    Tyrant Designs T-Comp Sig Sauer P320
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  7. Grayguns Sig Sauer P320 Competition Adjustable Trigger System - Straight
    Grayguns Sig Sauer P320 Competition Adjustable Trigger System - Straight
    $159.00
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  8. 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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  9. Tyrant Designs Sig Sauer P320 Extended Mag Release
    Tyrant Designs Sig Sauer P320 Extended Mag Release
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  10. GoGun USA Gas Pedal For Sig Sauer P365/P365XL - Right Hand
    GoGun USA Gas Pedal For Sig Sauer P365/P365XL - Right Hand
    $46.50
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  11. Griffin Armament ATM Sig Sauer P320 Compact Threaded Barrel w/ Micro Carry Comp
    Griffin Armament ATM Sig Sauer P320 Compact Threaded Barrel w/ Micro Carry Comp
    $186.00
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  12. 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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  13. Sig Sauer P320 OEM Slide Completion Kit
    Sig Sauer P320 OEM Slide Completion Kit
    Special Price $83.99 Regular Price $99.99
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  14. Sig Sauer P365 Extended Magazine Release Assembly
    Sig Sauer P365 Extended Magazine Release Assembly
    $34.99
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  15. Sig Sauer P320 Manual Safety Parts Kit
    Sig Sauer P320 Manual Safety Parts Kit
    $99.00
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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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