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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. Battle Arms Development Base Plate for Glock
    Battle Arms Development Base Plate for Glock
    $29.00
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  4. Killer Innovations Sig P320 Base Plate
    Killer Innovations Sig P320 Base Plate
    $30.39
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  5. Killer Innovations Velocity Base Pad For Glock
    Killer Innovations Velocity Base Pad For Glock
    $31.49
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  7. Mirzon Sig Sauer 320 Aluminum Base Pad
    Mirzon Sig Sauer 320 Aluminum Base Pad
    $22.99
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  9. Springer Precision STI/SVI 2011 140/170mm Base Pad
    Springer Precision STI/SVI 2011 140/170mm Base Pad
    $22.50
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  11. Springer Precision SIG P320/P250 9/40 EZ 140mm Base Pads w/ Power Spring
    Springer Precision SIG P320/P250 9/40 EZ 140mm Base Pads w/ Power Spring
    Out of stock
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  12. Empire Tanto Magazine Base Pad for Sig Sauer P365 X/XL
    Empire Tanto Magazine Base Pad for Sig Sauer P365 X/XL
    Out of stock
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  13. Taran Tactical Innovations Carry Magazine Base Pad for Glock 9/40 - Black
    Taran Tactical Innovations Carry Magazine Base Pad for Glock 9/40 - Black
    $25.99
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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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