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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. 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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  7. 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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  8. Killer Innovations CZ P10-C Non-Threaded Velocity Barrel
    Killer Innovations CZ P10-C Non-Threaded Velocity Barrel
    $249.00
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  9. Strike Industries Mag Sleeve for Glock 19
    Strike Industries Mag Sleeve for Glock 19
    $8.95
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  10. Grayguns Sig Sauer P320 Competition Hybrid Trigger System - Adjustable
    Grayguns Sig Sauer P320 Competition Hybrid Trigger System - Adjustable
    $159.00
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  11. Grayguns Sig Sauer P22X enhanced Strut and Seat
    Grayguns Sig Sauer P22X enhanced Strut and Seat
    $75.00
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  12. Zev Technologies Optimized Match Grade Barrel For Glock 17 Gen 1-4 - DLC
    Zev Technologies Optimized Match Grade Barrel For Glock 17 Gen 1-4 - DLC
    Special Price $162.92 Regular Price $255.78
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  13. Apex Tactical Specialties Failure Resistant Extractor for Glock - Gen 3/5
    Apex Tactical Specialties Failure Resistant Extractor for Glock - Gen 3/5
    $61.75
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  14. Arms Republic Slide Parts Kit For Glock 19 Gen 3
    Arms Republic Slide Parts Kit For Glock 19 Gen 3
    $59.99
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  15. Tyrant Designs Extended Slide Release For Glock Gen 2-4
    Tyrant Designs Extended Slide Release For Glock Gen 2-4
    $25.15
    +2
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  16. Killer Innovations Sig P320 +5 Magazine Extension
    Killer Innovations Sig P320 +5 Magazine Extension
    $47.49
    +1
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882 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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  17. 4.57" 2 item
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  19. 5" 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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