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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. Killer Innovations Velocity Slide Back Plate For Glock
    Killer Innovations Velocity Slide Back Plate For Glock
    $20.99
    +2
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  2. Killer Innovations Non-Threaded Velocity Barrel For Glock 26
    Killer Innovations Non-Threaded Velocity Barrel For Glock 26
    $229.00
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  3. Killer Innovations Threaded Velocity Barrel For Glock 26
    Killer Innovations Threaded Velocity Barrel For Glock 26
    $249.00
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  4. Sig Sauer GRIP MODULE Assembly FULL SIZE 320 X-Series - Grey Medium
    Sig Sauer GRIP MODULE Assembly FULL SIZE 320 X-Series - Grey Medium
    Special Price $210.99 Regular Price $249.99
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  5. Sig Sauer Grip Module Assembly P320 X-Series TXG Full – Grey
    Sig Sauer Grip Module Assembly P320 X-Series TXG Full – Grey
    Special Price $252.99 Regular Price $299.99
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  6. Killer Innovations Velocity MOD2 Stripped Slide For Glock 19 - Gen 4
    Killer Innovations Velocity MOD2 Stripped Slide For Glock 19 - Gen 4
    $449.00
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  7. Apex Tactical Specialties Heavy Duty Striker for FN 509
    Apex Tactical Specialties Heavy Duty Striker for FN 509
    $61.75
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  8. Killer Innovations Velocity MOD1 Stripped Slide For Glock 17 - Gen 4
    Killer Innovations Velocity MOD1 Stripped Slide For Glock 17 - Gen 4
    $459.00
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  9. Apex Tactical Specialties Action Enhancement Trigger Kit for Glock 43/43X/48
    Apex Tactical Specialties Action Enhancement Trigger Kit for Glock 43/43X/48
    $128.25
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  10. Apex Tactical Specialties FN 509 Action Enhancement Trigger Kit - Curved/Black
    Apex Tactical Specialties FN 509 Action Enhancement Trigger Kit - Curved/Black
    $152.00
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  11. Apex Tactical Specialties Walther PPQ Flat Trigger & Apex Tuned Trigger Bar
    Apex Tactical Specialties Walther PPQ Flat Trigger & Apex Tuned Trigger Bar
    $133.00
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  12. Apex Tactical Specialties Action Enhancement Trigger Kit For Glock - Gen 3/4 - Red
    Apex Tactical Specialties Action Enhancement Trigger Kit For Glock - Gen 3/4 - Red
    $137.75
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  13. Apex Tactical Specialties Performance Connector for Glocks
    Apex Tactical Specialties Performance Connector for Glocks
    $19.00
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  14. Griffin Armament Thread Barrel For Glock 17 Gen 3/4 w/ Micro Carry Comp
    Griffin Armament Thread Barrel For Glock 17 Gen 3/4 w/ Micro Carry Comp
    $186.00
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  15. Lantac 9INE Fluted/Threaded Barrel For Glock 43
    Lantac 9INE Fluted/Threaded Barrel For Glock 43
    $275.99
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  16. Devil Dog Concepts CHARPS Combat Pistol Sight Set For Glock - White 42/43
    Devil Dog Concepts CHARPS Combat Pistol Sight Set For Glock - White 42/43
    $80.00
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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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