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 33-48 of 50

Page
per page
  1. Sig Sauer Grip Module Assembly P320 X5 - Black Medium
    Sig Sauer Grip Module Assembly P320 X5 - Black Medium
    Special Price $100.99 Regular Price $119.99
    Out of stock
    Add to Wish List Add to Compare
  2. Brügger & Thomet (B&T) Universal Service Weapon USW for Sig Sauer P320
    Brügger & Thomet (B&T) Universal Service Weapon USW for Sig Sauer P320
    $299.00
    Out of stock
    Add to Wish List Add to Compare
  3. Empire Katana Magwell For Sig Sauer P320 AXG
    Empire Katana Magwell For Sig Sauer P320 AXG
    Out of stock
    Add to Wish List Add to Compare
  4. Empire Stiletto Trigger For Sig Sauer P320 - Black
    Empire Stiletto Trigger For Sig Sauer P320 - Black
    $84.99
    Out of stock
    Add to Wish List Add to Compare
  5. Mischief Machine P320 Grip Module - X Compact w/ Safety
    Mischief Machine P320 Grip Module - X Compact w/ Safety
    $365.00
    Out of stock
    Add to Wish List Add to Compare
  6. Mischief Machine Commander Sig Sauer P320 Grip Module Full Size
    Mischief Machine Commander Sig Sauer P320 Grip Module Full Size
    Out of stock
    Add to Wish List Add to Compare
  7. Tactical Development Top Charging Handle For Sig Sauer P320
    Tactical Development Top Charging Handle For Sig Sauer P320
    $90.25
    Out of stock
    Add to Wish List Add to Compare
  8. Sig P320 Slide Catch Assembly Kit - 9/40/357
    Sig P320 Slide Catch Assembly Kit - 9/40/357
    $25.79
    Out of stock
    Add to Wish List Add to Compare
  9. Shalotek Sig P320F IC Slide RMR Cut - Warden
    Shalotek Sig P320F IC Slide RMR Cut - Warden
    $380.00
    Out of stock
    Add to Wish List Add to Compare
  10. Agency Arms Sig P320 Compact Premier Line Threaded Barrel - SS
    Agency Arms Sig P320 Compact Premier Line Threaded Barrel - SS
    $310.00
    Out of stock
    Add to Wish List Add to Compare
  11. Sig Sauer Grip Module Assembly P320 X-Series Full - Black Large
    Sig Sauer Grip Module Assembly P320 X-Series Full - Black Large
    Special Price $49.95 Regular Price $59.99
    Out of stock
    Add to Wish List Add to Compare
  12. Grayguns Sig Sauer P320 Competition Adjustable Trigger System - Straight
    Grayguns Sig Sauer P320 Competition Adjustable Trigger System - Straight
    $159.00
    Out of stock
    Add to Wish List Add to Compare
  13. Norsso Sig Sauer P320 Full-Size Reptile Ported RMR Slide - Black Nitride
    Norsso Sig Sauer P320 Full-Size Reptile Ported RMR Slide - Black Nitride
    $445.55
    Out of stock
    Add to Wish List Add to Compare
  14. Tyrant Designs Sig Sauer P320 Extended Mag Release
    Tyrant Designs Sig Sauer P320 Extended Mag Release
    Out of stock
    Add to Wish List Add to Compare
  15. Griffin Armament ATM Sig Sauer P320 Compact Threaded Barrel w/ Micro Carry Comp
    Griffin Armament ATM Sig Sauer P320 Compact Threaded Barrel w/ Micro Carry Comp
    $186.00
    Out of stock
    Add to Wish List Add to Compare
  16. Sig Sauer P320 OEM Slide Completion Kit
    Sig Sauer P320 OEM Slide Completion Kit
    Special Price $83.99 Regular Price $99.99
    Out of stock
    Add to Wish List Add to Compare
View as Grid List

Items 33-48 of 50

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. Model Sig P320 Remove This Item
Clear All
Shopping Options
Barrel Length
  1. 3.6" 1 item
  2. 3.9" 2 items
  3. 5" 1 item
Barrel Profile
  1. SDM 1 item
Caliber
  1. 9mm 5 items
Color
Configuration
  1. Flat 1 item
  2. P320 3 items
Finish
  1. Black/Black 1 item
  2. Black/Nickel 1 item
  3. Black/TiN 1 item
  4. DLC 6 items
  5. Titanium Nitride (TiN) 1 item
Is Firearms?
  1. No 50 items
Manufacturer
  1. Agency Arms 10 items
  2. Apex Tactical Specialties 4 items
  3. Brügger & Thomet (B&T) 1 item
  4. Danger Close Armament 2 items
  5. Empire 3 items
  6. Grayguns 2 items
  7. Griffin Armament 1 item
  8. L2D Combat 1 item
  9. Mischief Machine 2 items
  10. Norsso 4 items
  11. Shalotek 4 items
  12. Sig Sauer 8 items
  13. Springer Precision 2 items
  14. Tactical Development 1 item
  15. Trinity Nevada 1 item
  16. Tyrant Designs 2 items
  17. Wilson Combat 1 item
Optic Footprint
  1. Trijicon RMR 1 item
Option
  1. Safety 1 item
  2. No Safety 1 item
  3. Sig Sauer 19 items
Platform
  1. Sig Sauer 46 items
Price
  1. $0.00 - $999.99 49 items
  2. $1,000.00 and above 1 item
Product Type
  1. Barrel 5 items
  2. Charging Handle 1 item
  3. Compensator 4 items
  4. Grip Module 6 items
  5. Magazine Release 2 items
  6. Magwell 3 items
  7. Optic Plate 1 item
  8. Parts Kit 1 item
  9. Pistol Frame 4 items
  10. Pistol Part 1 item
  11. Pistol Sights 1 item
  12. Slide 14 items
  13. Slide Parts Kit 2 items
  14. Trigger 5 items
Size
  1. X-Compact 2 items
  2. Full 1 item
Thread Pitch
  1. 1/2x28 3 items
Threaded
  1. Yes 1 item
  2. No 2 items
Twist Rate
  1. 1:10 3 items
Stock Status
  1. Out of stock 50 items Remove This Item
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