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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 P320 Recoil Spring Assembly
    Sig Sauer P320 Recoil Spring Assembly
    Special Price $31.19 Regular Price $39.99
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  2. Rainier Arms Slide Parts Kit For Glock 17 Gen 3
    Rainier Arms Slide Parts Kit For Glock 17 Gen 3
    $80.00
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  3. DPM Systems Technologies CZ 75 SP-01 Shadow Recoil Reduction System - 12 Adjustable Settings
    DPM Systems Technologies CZ 75 SP-01 Shadow Recoil Reduction System - 12 Adjustable Settings
    $96.45
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  4. Faction Match Grade Conversion Barrel For Glock 23 to 19 - DLC
    Faction Match Grade Conversion Barrel For Glock 23 to 19 - DLC
    Special Price $99.92 Regular Price $165.00
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  5. Agency Arms Sig P320 OEM Dual Port Compensator - Black
    Agency Arms Sig P320 OEM Dual Port Compensator - Black
    $100.00
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  6. Norsso Reptile Compact RMR Slide For Glock 19 Gen 3 - Black DLC
    Norsso Reptile Compact RMR Slide For Glock 19 Gen 3 - Black DLC
    $456.00
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  7. CAA Micro Conversion Advanced Kit (MCK Stabilizer) For Glock 17,19,19X,22,23,31,32,G45 - Clear
    CAA Micro Conversion Advanced Kit (MCK Stabilizer) For Glock 17,19,19X,22,23,31,32,G45 - Clear
    Special Price $297.92 Regular Price $425.00
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  8. CAA Micro Conversion Advanced Kit (MCK Stabilizer) Sig Sauer P320 - Clear
    CAA Micro Conversion Advanced Kit (MCK Stabilizer) Sig Sauer P320 - Clear
    Special Price $297.92 Regular Price $425.00
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  9. CAA Micro Conversion Advanced Kit (MCK Stabilizer) For Glock 17,19,19X,22,23,31,32,G45 - Clear Gen 2
    CAA Micro Conversion Advanced Kit (MCK Stabilizer) For Glock 17,19,19X,22,23,31,32,G45 - Clear Gen 2
    Special Price $319.92 Regular Price $460.00
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  10. Trinity Nevada GRND ZR0 Complete Slide For Glock 19 - DLC Slide RMR / TiN Barrel
    Trinity Nevada GRND ZR0 Complete Slide For Glock 19 - DLC Slide RMR / TiN Barrel
    $1,445.00
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  11. Trinity Nevada PiRho Sig Sauer P320 Complete Slide - DLC Slide RMR / TiN Barrel
    Trinity Nevada PiRho Sig Sauer P320 Complete Slide - DLC Slide RMR / TiN Barrel
    $1,645.00
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  12. Strike Industries LITE Slide for Glock 17 - Black
    Strike Industries LITE Slide for Glock 17 - Black
    $229.95
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  13. Rainier Arms Exclusive Danger Close Armament Silicon Carbide Sig Sauer P320 X-Series Full Size Grip Module - Medium
    Danger Close Armament Silicon Carbide Sig Sauer P320 X-Series Full Size Grip Module - Medium
    $300.00
    +3
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  14. CMC Trigger Drop-in Trigger For Glock
    CMC Trigger Drop-in Trigger For Glock
    Special Price $119.92 Regular Price $155.48
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  15. CMC Triggers 9mm Drop-in Trigger For Glock Gen 4 - Red
    CMC Triggers 9mm Drop-in Trigger For Glock Gen 4 - Red
    Special Price $119.92 Regular Price $172.75
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  16. Dark Hour Defense GSOD For Glock 17
    Dark Hour Defense GSOD For Glock 17
    Special Price $77.92 Regular Price $97.00
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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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  2. 9mm 139 item
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  6. 3.66" 1 item
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  8. 3.86" 1 item
  9. 3.9" 9 item
  10. 4" 1 item
  11. 4.02" 2 item
  12. 4.3" 1 item
  13. 4.37" 1 item
  14. 4.4" 1 item
  15. 4.46" 1 item
  16. 4.5" 2 item
  17. 4.57" 2 item
  18. 4.6" 2 item
  19. 5" 2 item
Option
  1. (Blue) - 15 lbs 2 item
  2. (Green) - 13 lbs 2 item
  3. (Red) - 18 lbs 2 item
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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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