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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. Sig Mechanics MSAFE-T P320 Manual Safety Conversion Tool Kit
    Sig Mechanics MSAFE-T P320 Manual Safety Conversion Tool Kit
    $49.99
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  2. Taran Tactical Innovations Grand Master Connector Kit for Gen 3 Glock - Competition
    Taran Tactical Innovations Grand Master Connector Kit for Gen 3 Glock - Competition
    $44.99
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  3. Taran Tactical Innovations Grand Master Connector Kit for Gen 4 Glock - Competition
    Taran Tactical Innovations Grand Master Connector Kit for Gen 4 Glock - Competition
    $44.99
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  4. Taran Tactical Innovations Grand Master Connector Kit for Gen 5 Glock - Competition
    Taran Tactical Innovations Grand Master Connector Kit for Gen 5 Glock - Competition
    $44.99
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  5. Tactical Development Tactical Rail For Sig Sauer P365XL
    Tactical Development Tactical Rail For Sig Sauer P365XL
    $42.30
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  6. Sig Sauer GRIP MODULE Assembly COMPACT 320, 9/40/357 - Black Small
    Sig Sauer GRIP MODULE Assembly COMPACT 320, 9/40/357 - Black Small
    Special Price $49.99 Regular Price $69.99
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  7. Sig Sauer Grip Module Assembly P320 X-Series Full - Black Medium
    Sig Sauer Grip Module Assembly P320 X-Series Full - Black Medium
    Special Price $49.99 Regular Price $59.99
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  8. Sig Sauer P238 .380ACP Legion Magazine - 7rd
    Sig Sauer P238 .380ACP Legion Magazine - 7rd
    Special Price $43.99 Regular Price $49.99
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  9. Sig Sauer Grip Module Assembly P320 X-Series Full - Black Large
    Sig Sauer Grip Module Assembly P320 X-Series Full - Black Large
    Special Price $49.95 Regular Price $59.99
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  10. True Precision Micro Compensator 9mm 1/2x28 - Black
    True Precision Micro Compensator 9mm 1/2x28 - Black
    $47.49
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  11. HB Industries Grand Power Stribog Extended Bolt Stop
    HB Industries Grand Power Stribog Extended Bolt Stop
    $40.59
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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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