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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
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  2. Agency Arms Sig P320 Dual Port Compensator - Black
    Agency Arms Sig P320 Dual Port Compensator - Black
    $100.00
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  3. 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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  4. Agency Arms Sig P320 X Series Magwell - Black
    Agency Arms Sig P320 X Series Magwell - Black
    $100.00
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  5. Agency Arms Sig P320 Single Port Compensator - Black
    Agency Arms Sig P320 Single Port Compensator - Black
    $100.00
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  6. L2D Combat Standard Upper Parts Kit
    L2D Combat Standard Upper Parts Kit
    Out of stock
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  7. DPM Systems Technologies Mechanical Recoil Reduction System For Glock 17/22 Gen 5 - Captured Version (B.O.S.S.)
    DPM Systems Technologies Mechanical Recoil Reduction System For Glock 17/22 Gen 5 - Captured Version (B.O.S.S.)
    $109.33
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  8. 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
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  9. Sig Sauer Grip Module Assembly P320 X5 - Black Medium
    Sig Sauer Grip Module Assembly P320 X5 - Black Medium
    Special Price $100.99 Regular Price $119.99
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  10. DPM Systems Technologies Mechanical Recoil Reduction System - Beretta 84FS Cheetah
    DPM Systems Technologies Mechanical Recoil Reduction System - Beretta 84FS Cheetah
    $102.83
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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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