Pursue Your Passion
My Cart

Discord

Menu
Account

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

Dark mode is

View as Grid List

Items 1-16 of 39

Page
per page
  1. True Precision Sig Sauer P365 X-Fluted Match Grade Barrel
    True Precision Sig Sauer P365 X-Fluted Match Grade Barrel
    $161.49 - $180.49
    Add to Wish List Add to Compare
  2. True Precision Sig Sauer P365 X-Fluted Match Grade Barrel Threaded 1/2X28
    True Precision Sig Sauer P365 X-Fluted Match Grade Barrel Threaded 1/2X28
    $170.99 - $189.99
    Add to Wish List Add to Compare
  3. L2D Combat Precision Match Sig Sauer P320 Compact 9MM Barrel - Fluted
    L2D Combat Precision Match Sig Sauer P320 Compact 9MM Barrel - Fluted
    $149.99
    Add to Wish List Add to Compare
  5. Killer Innovations Sig P320C Velocity Threaded Barrel
    Killer Innovations Sig P320C Velocity Threaded Barrel
    $268.00
    Add to Wish List Add to Compare
  6. Killer Innovations Sig P320C Velocity Non-Threaded Barrel
    Killer Innovations Sig P320C Velocity Non-Threaded Barrel
    $249.00
    Add to Wish List Add to Compare
  7. Agency Arms Sig P320 Compact Mid Line Barrel
    Agency Arms Sig P320 Compact Mid Line Barrel
    $200.00
    Add to Wish List Add to Compare
  8. True Precision SIG Sauer P365XL X-Fluted Match Grade Barrel Threaded 1/2X28
    True Precision SIG Sauer P365XL X-Fluted Match Grade Barrel Threaded 1/2X28
    $170.99 - $189.99
    Add to Wish List Add to Compare
  10. True Precision Sig Sauer P365XL X-Fluted Match Grade Barrel
    True Precision Sig Sauer P365XL X-Fluted Match Grade Barrel
    $161.49 - $180.49
    Add to Wish List Add to Compare
  11. Agency Arms Sig P320 Compact Mid Line Threaded Barrel
    Agency Arms Sig P320 Compact Mid Line Threaded Barrel
    $210.00
    Add to Wish List Add to Compare
  12. Killer Innovations Sig P320 X-Carry Velocity Non-Threaded Barrel
    Killer Innovations Sig P320 X-Carry Velocity Non-Threaded Barrel
    $249.00
    Add to Wish List Add to Compare
  13. Faxon Firearms Match Series Sig Sauer P365 9mm Barrel
    Faxon Firearms Match Series Sig Sauer P365 9mm Barrel
    $161.00 - $179.40
    Add to Wish List Add to Compare
  14. Faxon Firearms Match Series Sig Sauer P365XL 9mm Barrel
    Faxon Firearms Match Series Sig Sauer P365XL 9mm Barrel
    $161.00 - $179.40
    Add to Wish List Add to Compare
  15. Faxon Firearms Match Series Sig Sauer P365 9mm Threaded Barrel
    Faxon Firearms Match Series Sig Sauer P365 9mm Threaded Barrel
    $170.20 - $188.60
    Add to Wish List Add to Compare
  16. Killer Innovations Sig P320 X-Compact Velocity Non-Threaded Barrel
    Killer Innovations Sig P320 X-Compact Velocity Non-Threaded Barrel
    $249.00
    Add to Wish List Add to Compare
View as Grid List

Items 1-16 of 39

Page
per page

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.

Shop By
Now Shopping by
  1. Product Type Barrel Remove This Item
  2. Platform Sig Sauer Remove This Item
Clear All
Shopping Options
Barrel Length
  1. 3.1" 2 items
  2. 3.54" 1 item
  3. 3.6" 3 items
  4. 3.7" 1 item
  5. 3.86" 1 item
  6. 3.9" 8 items
  7. 4.57" 1 item
  8. 4.6" 1 item
  9. 5" 1 item
Caliber
  1. 9mm 30 items
Color
Configuration
  1. P320 5 items
  2. P365 3 items
  3. P365XL 2 items
Finish
  1. DLC 11 items
  2. Nitride 6 items
  3. PVD/CVD 2 items
  4. Titanium Nitride (TiN) 13 items
  5. Molecular Dense Coating (MDC) 2 items
Is Firearms?
  1. No 39 items
Manufacturer
  1. Agency Arms 5 items
  2. Danger Close Armament 4 items
  3. Faxon Firearms 8 items
  4. Grey Ghost Precision 1 item
  5. Griffin Armament 2 items
  6. Killer Innovations 5 items
  7. L2D Combat 2 items
  8. Shalotek 3 items
  9. Strike Industries 1 item
  10. True Precision 8 items
  11. Tyrant Designs 1 item
Model
  1. Sig P320 24 items
  2. Sig P365 9 items
  3. Sig P365XL 5 items
Option
  1. Sig Sauer P Series 1 item
  2. Glock 1 item
  3. Sig Sauer 21 items
Price
  1. $0.00 - $99.99 2 items
  2. $100.00 - $199.99 22 items
  3. $200.00 - $299.99 12 items
  4. $300.00 and above 3 items
Size
  1. X-Compact 1 item
  2. Compact 1 item
Thread Pitch
  1. 1/2x28 11 items
Threaded
  1. Yes 8 items
  2. No 14 items
Twist Rate
  1. 1:9 1 item
  2. 1:10 18 items
Stock Status
  1. In stock 30 items
  2. Out of stock 9 items
My Wish List
Last Added Items
  1. Add to Cart
    Remove This Item
Go to Wish List
You have no items in your wish list.

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.

Google Customer Reviews Google Customer Reviews