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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. 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
    Out of stock
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  2. Rainier Arms Exclusive Danger Close Armament DCA-48 Select Match Threaded Barrel For Glock 48 - TiN
    Danger Close Armament DCA-48 Select Match Threaded Barrel For Glock 48 - TiN
    $206.99
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  3. TXC Holsters X1 Ally For Glock 9/40 w/ Mag Pouch - RH Black
    TXC Holsters X1 Ally For Glock 9/40 w/ Mag Pouch - RH Black
    $104.99
    Out of stock
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  4. Griffin Armament ATM Threaded Barrel For Glock 43 w/ Micro Carry Comp
    Griffin Armament ATM Threaded Barrel For Glock 43 w/ Micro Carry Comp
    $186.00
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  5. Springer Precision P320 Extended Magazine Release - Production/ESP
    Springer Precision P320 Extended Magazine Release - Production/ESP
    Out of stock
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  6. Agency Arms 9mm Syndicate Trigger For Glock - Black
    Agency Arms 9mm Syndicate Trigger For Glock - Black
    $60.00
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  7. Agency Arms Syndicate Trigger For Glock Gen 5
    Agency Arms Syndicate Trigger For Glock Gen 5
    $60.00
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  8. Tyrant Designs +4/5 9mm/.40 Magazine Extension For Glock 19/23 - Black
    Tyrant Designs +4/5 9mm/.40 Magazine Extension For Glock 19/23 - Black
    $35.95
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  9. Agency Arms Syndicate S-2 Stripped Slide For Glock 19 Gen 3
    Agency Arms Syndicate S-2 Stripped Slide For Glock 19 Gen 3
    $550.00
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  10. Tyrant Designs T-Comp Sig Sauer P320
    Tyrant Designs T-Comp Sig Sauer P320
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  11. Lantac E-CTG9 Upgrade Trigger For Glock 17/19 - Gen 4
    Lantac E-CTG9 Upgrade Trigger For Glock 17/19 - Gen 4
    $141.29
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  12. Lantac E-CTG9 Upgrade Trigger For Glock 17/19 - Gen 1-3
    Lantac E-CTG9 Upgrade Trigger For Glock 17/19 - Gen 1-3
    $141.29
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  13. ARC Division Arc9 Match Series Fluted/Threaded Barrel For Glock 19
    ARC Division Arc9 Match Series Fluted/Threaded Barrel For Glock 19
    Out of stock
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  14. Norsso RMR Cover Plate For Glock
    Norsso RMR Cover Plate For Glock
    $28.50
    Out of stock
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  15. Springer Precision Sig Sauer M17/X-Compact/X-Five LEGION RMR Mount
    Springer Precision Sig Sauer M17/X-Compact/X-Five LEGION RMR Mount
    $55.00
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  16. Apex Tactical Specialties 9mm Threaded Barrel for FN 509 - 4"
    Apex Tactical Specialties 9mm Threaded Barrel for FN 509 - 4"
    $213.75
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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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  35. Glock 45 5 items
  36. Glock 48 8 items
  37. H&K VP9 1 item
  38. Nomad 9 4 items
  39. Sig P220 1 item
  40. Sig P226 1 item
  41. Sig P229 1 item
  42. Sig P238 1 item
  43. Sig P320 52 items
  44. Sig P365 19 items
  45. Sig P365X 3 items
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  48. Sig P938 1 item
  49. Sig MPX 1 item
  50. S&W M&P 1 item
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  53. Springfield Hellcat 1 item
  54. Stoeger STR-9 1 item
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  9. Springfield 3 items
  10. Stoeger 1 item
Price
  1. $0.00 - $999.99 231 items
  2. $1,000.00 and above 1 item
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  1. Accessory 4 items
  2. Barrel 28 items
  3. Basepad 3 items
  4. Charging Handle 2 items
  5. Compensator 16 items
  6. Extended Slide Stop 1 item
  7. Firing Pin 1 item
  8. Grip Accessory 1 item
  9. Grip Module 8 items
  10. Guide Rod 3 items
  11. Holster 1 item
  12. Iron Sight 1 item
  13. Locking Block 1 item
  14. Magazine 3 items
  15. Magazine Extension 3 items
  16. Magazine Release 6 items
  17. Magwell 16 items
  18. Muzzle Device Accessory 2 items
  19. Optic Plate 1 item
  20. Parts Kit 3 items
  21. Pistol Accessory 1 item
  22. Pistol Frame 11 items
  23. Pistol Part 15 items
  24. Pistol Sights 9 items
  25. Recoil Spring 6 items
  26. Slide 44 items
  27. Slide Parts Kit 3 items
  28. Spring 1 item
  29. Top Cover 1 item
  30. Trigger 25 items
  31. Upper Parts Kit 2 items
Size
  1. 3 Slot 1 item
  2. 5 Slot 1 item
  3. 9 Slot 1 item
  4. X-Compact 3 items
  5. Full 1 item
Thread Pitch
  1. 1/2x28 15 items
Threaded
  1. Yes 4 items
  2. No 5 items
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  1. 1:10 6 items
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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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