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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 2.0 Flat Face Forward Set Trigger Kit - Black
    Apex Tactical Specialties M&P 2.0 Flat Face Forward Set Trigger Kit - Black
    $104.50
    Out of stock
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  2. Apex Tactical Specialties FN FNX-45 MRat Compensator - Black
    Apex Tactical Specialties FN FNX-45 MRat Compensator - Black
    $166.25
    Out of stock
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  3. DPM Systems Technologies Mechanical Recoil Reduction System - Beretta 84FS Cheetah
    DPM Systems Technologies Mechanical Recoil Reduction System - Beretta 84FS Cheetah
    $102.83
    Out of stock
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  4. L2D Combat P320 X-Compact Precision Match 9mm Barrel - 3.6"
    L2D Combat P320 X-Compact Precision Match 9mm Barrel - 3.6"
    Out of stock
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  5. DPM Systems Technologies Recoil Reduction System - Springfield Hellcat PRO
    DPM Systems Technologies Recoil Reduction System - Springfield Hellcat PRO
    $107.20
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  6. Taran Tactical Innovations Full Size Competition Magwell for Glock Gen 3 - Flat Black
    Taran Tactical Innovations Full Size Competition Magwell for Glock Gen 3 - Flat Black
    $104.99
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  7. DPM Systems Technologies Recoil Reduction System For Glock 17/22 Gen 5 - (B.O.S.S.)
    DPM Systems Technologies Recoil Reduction System For Glock 17/22 Gen 5 - (B.O.S.S.)
    $117.91
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  8. Haley Strategic HSP Thirteen Iron Sights For Glock - Full Tritium
    Haley Strategic HSP Thirteen Iron Sights For Glock - Full Tritium
    $139.00
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  9. L2D Combat Precision Match Fluted Barrel for Glock 34 Gen 3/4
    L2D Combat Precision Match Fluted Barrel for Glock 34 Gen 3/4
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  10. L2D Combat Precision Match Fluted Threaded Barrel For Glock 17 Gen 5
    L2D Combat Precision Match Fluted Threaded Barrel For Glock 17 Gen 5
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  11. Apex Tactical Specialties FN FNX-45 MRat Compensator - FDE
    Apex Tactical Specialties FN FNX-45 MRat Compensator - FDE
    $190.00
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  12. Apex Tactical Specialties Action Enhancement Trigger Kit for Springfield SA-35 / Browning Hi-Power Pistols
    Apex Tactical Specialties Action Enhancement Trigger Kit for Springfield SA-35 / Browning Hi-Power Pistols
    $190.00
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  13. Empire Stiletto Mk3 Trigger Kit For Glock Gen 5 Pistol - Black/Black
    Empire Stiletto Mk3 Trigger Kit For Glock Gen 5 Pistol - Black/Black
    $124.99
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  14. NIGHT FISION Suppressor Height Sig Sauer TRITIUM SIGHT Set - Square Rear
    NIGHT FISION Suppressor Height Sig Sauer TRITIUM SIGHT Set - Square Rear
    Out of stock
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  15. Grayguns Sig Sauer P320 Competition Adjustable Trigger System - Straight
    Grayguns Sig Sauer P320 Competition Adjustable Trigger System - Straight
    $159.00
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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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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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