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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. Apex Tactical Specialties M&P 9/40 Duty/Carry Action Enhancement Kit
    Apex Tactical Specialties M&P 9/40 Duty/Carry Action Enhancement Kit
    $95.00
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  2. Apex Tactical Specialties M&P Shield Carry Kit
    Apex Tactical Specialties M&P Shield Carry Kit
    $95.00
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  3. Trijicon Novak M&P Front & Rear Night Sight Set
    Trijicon Novak M&P Front & Rear Night Sight Set
    $129.00
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  4. Trijicon M&P HD Night Sight Set-Yellow Front Outline
    Trijicon M&P HD Night Sight Set-Yellow Front Outline
    $170.00
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  5. Modular Evolution Evopod Bi-Pod Barricade Buster
    Modular Evolution Evopod Bi-Pod Barricade Buster
    Special Price $69.92 Regular Price $93.99
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  6. Killer Innovations Velocity Base Pad For Glock
    Killer Innovations Velocity Base Pad For Glock
    $31.49
    +2
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  7. Magpul Enhanced Magwell For Glock 19 Gen 3
    Magpul Enhanced Magwell For Glock 19 Gen 3
    $23.70
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  8. Night Fision Smith & Wesson M&P Suppressor Height Perfect Dot Tritium Night Sight Set - White/Black
    Night Fision Smith & Wesson M&P Suppressor Height Perfect Dot Tritium Night Sight Set - White/Black "Square" Rear
    $105.30
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  9. Night Fision Smith & Wesson M&P Shield and C.O.R.E Series Perfect Dot Tritium Night Sight Set -
    Night Fision Smith & Wesson M&P Shield and C.O.R.E Series Perfect Dot Tritium Night Sight Set - "U" Rear - Orange/White
    $97.20
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  10. Night Fision Smith & Wesson M&P, M&P M2.0, SD9 VE, SD40 VE Perfect Dot Tritium Night Sight Set -
    Night Fision Smith & Wesson M&P, M&P M2.0, SD9 VE, SD40 VE Perfect Dot Tritium Night Sight Set - "Square" Rear
    $97.20
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  11. Night Fision Smith & Wesson M&P, M&P M2.0, SD9 VE, SD40 VE Perfect Dot Tritium Night Sight Set -
    Night Fision Smith & Wesson M&P, M&P M2.0, SD9 VE, SD40 VE Perfect Dot Tritium Night Sight Set - "U" Rear
    $97.20
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  12. Tyrant Designs Smith & Wesson M&P Shield Extended Magazine Release
    Tyrant Designs Smith & Wesson M&P Shield Extended Magazine Release
    $22.45
    +1
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  13. Lantac ESP-S Ultra Smooth Safety Plunger & Spring For Glock 17/19
    Lantac ESP-S Ultra Smooth Safety Plunger & Spring For Glock 17/19
    $18.99
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  14. True Precision X-Fluted Match Grade Barrel For Glock 19
    True Precision X-Fluted Match Grade Barrel For Glock 19
    $199.49
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  15. Tyrant Designs Extended Magazine Release For Glock 43
    Tyrant Designs Extended Magazine Release For Glock 43
    $25.15
    +3
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  16. CMC Triggers Fluted Non-Threaded Barrel For Glock 19 - DLC Black
    CMC Triggers Fluted Non-Threaded Barrel For Glock 19 - DLC Black
    Special Price $149.92 Regular Price $179.10
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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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  8. 3.86" 1 item
  9. 3.9" 9 item
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  12. 4.3" 1 item
  13. 4.37" 1 item
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  17. 4.57" 2 item
  18. 4.6" 2 item
  19. 5" 2 item
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  1. (Blue) - 15 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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