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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. Rainier Arms Exclusive ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XXLC Sentinel LoPro
    ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XXLC Sentinel LoPro
    $280.00
    Out of stock
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  2. ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XC Sentinel
    ShaloTek Sig Sauer P365 Integrally Compensated RMSc Slide - XC Sentinel
    $275.00
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  3. Apex Tactical Specialties FN FNX-45 MRat Compensator - FDE
    Apex Tactical Specialties FN FNX-45 MRat Compensator - FDE
    $190.00
    Out of stock
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  4. Apex Tactical Specialties M&P Shield Action Enhancement Trigger
    Apex Tactical Specialties M&P Shield Action Enhancement Trigger
    $80.75
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  5. SLR M-LOK RAIL SECTION- 5 Slots
    SLR M-LOK RAIL SECTION- 5 Slots
    $33.59
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  6. SLR M-LOK Rail SECTION-9 slots
    SLR M-LOK Rail SECTION-9 slots
    $30.39
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  7. SLR M-LOK RAIL SECTION- 3 Slots
    SLR M-LOK RAIL SECTION- 3 Slots
    $33.59
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  8. Shooters Element CZ Scorpion Flat Trigger - Black
    Shooters Element CZ Scorpion Flat Trigger - Black
    $33.25
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  9. Shooters Element CZ Scorpion Flat Trigger - Red
    Shooters Element CZ Scorpion Flat Trigger - Red
    $37.99
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  10. Apex Tactical Specialties M&P Flat-Faced Forward Set Sear & Trigger Kit - Red
    Apex Tactical Specialties M&P Flat-Faced Forward Set Sear & Trigger Kit - Red
    $175.75
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  11. Lantac Razorback Windowed Stripped Slide For Glock 19 Gen 3
    Lantac Razorback Windowed Stripped Slide For Glock 19 Gen 3
    $431.99
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  12. L2D Combat Catalyst Stripped Slide For Glock 19 Gen 3
    L2D Combat Catalyst Stripped Slide For Glock 19 Gen 3
    Out of stock
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  13. L2D Combat Pin Set For Glock Gen 4
    L2D Combat Pin Set For Glock Gen 4
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  14. L2D Combat Standard Upper Parts Kit
    L2D Combat Standard Upper Parts Kit
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  15. L2D Combat Precision Match Fluted Threaded Barrel For Glock 17
    L2D Combat Precision Match Fluted Threaded Barrel For Glock 17
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  16. L2D Combat Pin Set For Glock Gen 5
    L2D Combat Pin Set For Glock Gen 5
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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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