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 17-32 of 51

Page
per page
  2. Killer Innovations Velocity Sig P320 Compact V2 Stripped Slide
    Killer Innovations Velocity Sig P320 Compact V2 Stripped Slide
    $454.00
    Add to Wish List Add to Compare
  4. Rainier Arms Exclusive The Gun Co. SS320 Sig P320 Compact Slide
    The Gun Co. SS320 Sig P320 Compact Slide
    $390.00 - $479.00
    Add to Wish List Add to Compare
  5. True Precision Sig Sauer P365XL Slide w/ RMS Cut & Cover Plate
    True Precision Sig Sauer P365XL Slide w/ RMS Cut & Cover Plate
    $375.25
    Add to Wish List Add to Compare
  10. Norsso Sig Sauer P320SC Sub/X-Compact pBentham RMR Slide - Black DLC
    Norsso Sig Sauer P320SC Sub/X-Compact pBentham RMR Slide - Black DLC
    $369.55
    Out of stock
    Add to Wish List Add to Compare
  11. Norsso Sig Sauer P320SC Sub/X-Compact Reptile RMR Slide - Black DLC
    Norsso Sig Sauer P320SC Sub/X-Compact Reptile RMR Slide - Black DLC
    $417.05
    Out of stock
    Add to Wish List Add to Compare
  12. Agency Arms Sig P320 Compact/X-Carry Gavel Slide - DLC
    Agency Arms Sig P320 Compact/X-Carry Gavel Slide - DLC
    $825.00
    Out of stock
    Add to Wish List Add to Compare
  13. Agency Arms Sig P320 Compact/X-Carry Syndicate S2 Slide
    Agency Arms Sig P320 Compact/X-Carry Syndicate S2 Slide
    $575.00
    Out of stock
    Add to Wish List Add to Compare
  14. Agency Arms Sig P320 Compact/X-Carry Syndicate S1 Field Slide - DLC
    Agency Arms Sig P320 Compact/X-Carry Syndicate S1 Field Slide - DLC
    $575.00
    Out of stock
    Add to Wish List Add to Compare
  15. Agency Arms Sig P320 Compact/X-Carry Syndicate S1 Urban AOS Slide
    Agency Arms Sig P320 Compact/X-Carry Syndicate S1 Urban AOS Slide
    $575.00
    Out of stock
    Add to Wish List Add to Compare
  16. Norsso Sig Sauer P320C Reptile Ported RMR Slide - Black DLC
    Norsso Sig Sauer P320C Reptile Ported RMR Slide - Black DLC
    $436.05
    Out of stock
    Add to Wish List Add to Compare
View as Grid List

Items 17-32 of 51

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 Slide Remove This Item
  2. Platform Sig Sauer Remove This Item
Clear All
Shopping Options
Caliber
  1. 9mm 2 items
Color
Configuration
  1. P320 2 items
Finish
  1. Black DLC 1 item
  2. DLC 8 items
  3. MDC (Gray) 1 item
  4. Nitride 6 items
  5. Molecular Dense Coating (MDC) 1 item
Is Firearms?
  1. No 51 items
Manufacturer
  1. Agency Arms 4 items
  2. Danger Close Armament 5 items
  3. Killer Innovations 5 items
  4. Norsso 11 items
  5. Shalotek 19 items
  6. Sharps Bros 1 item
  7. The Gun Co. 1 item
  8. Trinity Nevada 1 item
  9. True Precision 3 items
Model
  1. Sig P320 25 items
  2. Sig P365 10 items
  3. Sig P365X 1 item
  4. Sig P365XL 5 items
Optic Footprint
  1. Shield RMSc 6 items
  2. Trijicon RMR 2 items
Option
  1. V2 1 item
  2. Sig Sauer 8 items
Price
  1. $0.00 - $999.99 50 items
  2. $1,000.00 and above 1 item
Size
  1. Micro-Compact 1 item
  2. X-Compact 2 items
  3. Compact 1 item
  4. Full 1 item
Threaded
  1. No 2 items
Stock Status
  1. In stock 25 items
  2. Out of stock 26 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