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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. Agency Arms Mid Line Fluted Barrel For Glock 48 - TiN
    Agency Arms Mid Line Fluted Barrel For Glock 48 - TiN
    $200.00
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  2. Strike Industries Barrel for Sig Sauer P365
    Strike Industries Barrel for Sig Sauer P365
    $194.95
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  3. Killer Innovations Sancer Slide for Glock 17 Gen 3
    Killer Innovations Sancer Slide for Glock 17 Gen 3
    Special Price $251.92 Regular Price $359.00
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  4. Rainier Arms Exclusive Spinta Precision Allegiance Slide for Glock 17 Gen 3 (Rainier Arms Exclusive)
    Spinta Precision Allegiance Slide for Glock 17 Gen 3 (Rainier Arms Exclusive)
    Special Price $286.00 Regular Price $370.00
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  5. Handleitgrips Textured Rubber Grip Kit for Sig Sauer P365
    Handleitgrips Textured Rubber Grip Kit for Sig Sauer P365
    $16.99
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  6. Handleitgrips Edge Grip Kit for Springfield Hellcat - No Logo
    Handleitgrips Edge Grip Kit for Springfield Hellcat - No Logo
    $16.99
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  7. Killer Innovations Velocity Sig P320 Compact V2 Stripped Slide
    Killer Innovations Velocity Sig P320 Compact V2 Stripped Slide
    $454.00
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  8. Handleitgrips Edge Grip Kit for Glock 19/23 Gen 4
    Handleitgrips Edge Grip Kit for Glock 19/23 Gen 4
    $16.99
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  9. Handleitgrips Sandpaper Grip Kit for Glock 17/22/34/35 Gen 3
    Handleitgrips Sandpaper Grip Kit for Glock 17/22/34/35 Gen 3
    $16.99
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  10. Kagwerks Extended & Raised Slide Release for Glock 43/43X/48
    Kagwerks Extended & Raised Slide Release for Glock 43/43X/48
    $51.99
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  11. Rainier Arms Exclusive The Gun Co. SS320 Sig P320 Compact Slide
    The Gun Co. SS320 Sig P320 Compact Slide
    Special Price $390.00 Regular Price $479.00
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  12. Tyrant Designs Two Piece Sights for Full Size Glock
    Tyrant Designs Two Piece Sights for Full Size Glock
    $62.95
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  13. HB Industries Grand Power Stribog SP9A3 Locking Charging Block
    HB Industries Grand Power Stribog SP9A3 Locking Charging Block
    $33.66
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  14. HB Industries Grand Power Stribog Extended Bolt Stop
    HB Industries Grand Power Stribog Extended Bolt Stop
    $40.59
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  15. Tyrant Designs Magwell For Glock 19 Gen 5
    Tyrant Designs Magwell For Glock 19 Gen 5
    $62.95
    +3
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  16. Toni Systems Shadow I/II/TS/75B X3D Long Grip - Black
    Toni Systems Shadow I/II/TS/75B X3D Long Grip - Black
    $105.96
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892 Items

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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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  8. 3.86" 1 item
  9. 3.9" 9 item
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  12. 4.3" 1 item
  13. 4.37" 1 item
  14. 4.4" 1 item
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  17. 4.57" 2 item
  18. 4.6" 2 item
  19. 5" 2 item
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  1. (Blue) - 15 lbs 2 item
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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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