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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. Griffin Armament Thread Barrel For Glock 17 Gen 3/4 w/ Micro Carry Comp
    Griffin Armament Thread Barrel For Glock 17 Gen 3/4 w/ Micro Carry Comp
    $186.00
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  2. Lantac 9INE Fluted/Threaded Barrel For Glock 43
    Lantac 9INE Fluted/Threaded Barrel For Glock 43
    $275.99
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  3. Devil Dog Concepts CHARPS Combat Pistol Sight Set For Glock - White 42/43
    Devil Dog Concepts CHARPS Combat Pistol Sight Set For Glock - White 42/43
    $80.00
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  4. Night Fision Glow Dome Tritium Night Sights Set For Glock -
    Night Fision Glow Dome Tritium Night Sights Set For Glock - "Square" Rear
    Special Price $69.92 Regular Price $107.00
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  5. Night Fision Glow Dome Tritium Night Sights Set For Glock 42/43/43X -
    Night Fision Glow Dome Tritium Night Sights Set For Glock 42/43/43X - "U" Rear
    $107.00
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  6. Grayguns Sig Sauer P-Series P22x ELS Trigger System - DAK Compatible
    Grayguns Sig Sauer P-Series P22x ELS Trigger System - DAK Compatible
    $169.00
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  7. CAA Micro Conversion Advanced Kit Laser (MCKL)
    CAA Micro Conversion Advanced Kit Laser (MCKL)
    Special Price $57.92 Regular Price $82.00
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  8. Nighthawk Custom .45ACP Government Magazine with Base Pad - 8 RD
    Nighthawk Custom .45ACP Government Magazine with Base Pad - 8 RD
    $31.99
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  9. Nighthawk Custom 9mm Government Magazine with Base Pad - 10 RD
    Nighthawk Custom 9mm Government Magazine with Base Pad - 10 RD
    $34.99
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  10. Night Fision Sig Sauer Glow Dome Tritium Night Sights Set - #8/8
    Night Fision Sig Sauer Glow Dome Tritium Night Sights Set - #8/8 "Square" Rear
    $107.00
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  11. Night Fision Sig Sauer Glow Dome Tritium Night Sights Set - #8/8
    Night Fision Sig Sauer Glow Dome Tritium Night Sights Set - #8/8 "U" Rear
    $107.00
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  12. Killer Innovations Velocity CZ P-10 Magwell
    Killer Innovations Velocity CZ P-10 Magwell
    $84.99
    +3
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  13. Killer Innovations Velocity CZ P-10 Base Pad - Red
    Killer Innovations Velocity CZ P-10 Base Pad - Red
    Special Price $24.92 Regular Price $31.99
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  14. Killer Innovations Velocity CZ P-10 Trigger - Red/Black
    Killer Innovations Velocity CZ P-10 Trigger - Red/Black
    $79.99
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  15. Sig Sauer P938 9MM Magazine - 6 Rd
    Sig Sauer P938 9MM Magazine - 6 Rd
    Special Price $43.99 Regular Price $49.99
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  16. Griffin Armament Sig Sauer P365 Thread Barrel w/ Micro Carry Comp
    Griffin Armament Sig Sauer P365 Thread Barrel w/ Micro Carry Comp
    $186.00
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881 Items

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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
  7. 3.7" 4 item
  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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  2. Out of Stock 239 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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