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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. 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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  2. 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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  3. 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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  4. Killer Innovations Velocity Base Pad For Glock
    Killer Innovations Velocity Base Pad For Glock
    $31.49
    +2
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  5. 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
    View Details
  6. Tyrant Designs Smith & Wesson M&P Shield Extended Magazine Release
    Tyrant Designs Smith & Wesson M&P Shield Extended Magazine Release
    $22.45
    +1
    View Details
  7. 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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  8. Agency Arms Urban Combat Stripped Slide For Glock 17 Gen 3 - DLC
    Agency Arms Urban Combat Stripped Slide For Glock 17 Gen 3 - DLC
    $950.00
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  9. 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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  10. Tyrant Designs Extended Magazine Release For Glock 43
    Tyrant Designs Extended Magazine Release For Glock 43
    $25.15
    +3
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  11. 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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  12. Agency Arms Mid Line Fluted Barrel for Glock 19 Gen 5
    Agency Arms Mid Line Fluted Barrel for Glock 19 Gen 5
    $200.00
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  13. Dark Hour Defense Compensated w/Rail GSOD - M&P 2.0
    Dark Hour Defense Compensated w/Rail GSOD - M&P 2.0
    Special Price $84.92 Regular Price $106.70
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  14. Apex Tactical Specialties Action Enhancement Kit for Glock Gen 5 Pistols - Red
    Apex Tactical Specialties Action Enhancement Kit for Glock Gen 5 Pistols - Red
    $133.00
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  15. Polymer80 PF-Series Slide Parts Kit For Glock - Black/Red
    Polymer80 PF-Series Slide Parts Kit For Glock - Black/Red
    $85.00
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  16. Killer Innovations Velocity Non-Threaded Barrel for Glock 19
    Killer Innovations Velocity Non-Threaded Barrel for Glock 19
    $229.00
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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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  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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