To See Our Holiday 2024 Schedule, Please Visit Our Contact Page.

Pursue Your Passion
My Cart

Rainier Arms on Instagram

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
View as Grid List

Items 385-400 of 459

Page
per page
  1. Stoeger Industries STR-9 9MM Magazine - 15RD
    Stoeger Industries STR-9 9MM Magazine - 15RD
    $35.00
    Out of stock
    Add to Wish List Add to Compare
  3. 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
  5. Rainier Arms Fiber Optic Sight Set For Glock
    Rainier Arms Fiber Optic Sight Set For Glock
    $50.00
    Out of stock
    Add to Wish List Add to Compare
  8. SLR M-LOK RAIL SECTION- 5 Slots
    SLR M-LOK RAIL SECTION- 5 Slots
    $33.59
    Out of stock
    Add to Wish List Add to Compare
  9. SLR M-LOK Rail SECTION-9 slots
    SLR M-LOK Rail SECTION-9 slots
    $30.39
    Out of stock
    Add to Wish List Add to Compare
  10. SLR M-LOK RAIL SECTION- 3 Slots
    SLR M-LOK RAIL SECTION- 3 Slots
    $33.59
    Out of stock
    Add to Wish List Add to Compare
  11. Shooters Element CZ Scorpion Flat Trigger - Black
    Shooters Element CZ Scorpion Flat Trigger - Black
    $33.25
    Out of stock
    Add to Wish List Add to Compare
  12. Shooters Element CZ Scorpion Flat Trigger - Red
    Shooters Element CZ Scorpion Flat Trigger - Red
    $37.99
    Out of stock
    Add to Wish List Add to Compare
  13. Tyrant Design Sig Sauer P365 Slide Cap
    Tyrant Design Sig Sauer P365 Slide Cap
    Out of stock
    Add to Wish List Add to Compare
  14. Sig Sauer P365 X-Macro Grip Module Assembly - Black
    Sig Sauer P365 X-Macro Grip Module Assembly - Black
    Special Price $86.99 Regular Price $99.99
    Out of stock
    Add to Wish List Add to Compare
View as Grid List

Items 385-400 of 459

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. Price $0.00 - $99.99 Remove This Item
Clear All
Shopping Options
Barrel Length
  1. 4.02" 1 item
Barrel Profile
  1. SDM 1 item
Caliber
  1. .45 ACP 1 item
  2. 9mm 21 items
Category
  1. Pistol parts 446 items
Color
Configuration
  1. 1st - 3rd Gen 1 item
  2. Curved 2 items
  3. Gen 1-3 2 items
  4. Gen 3 6 items
  5. Gen 4 7 items
  6. Gen 5 1 item
  7. Right Hand 1 item
  8. Stainless Steel 2 items
  9. Standard 1 item
  10. Straight 1 item
  11. Titanium 1 item
  12. Tungsten 2 items
  13. G17 1 item
  14. G19 1 item
  15. P320 4 items
  16. P365 2 items
  17. P365XL 1 item
  18. Handgun 7 items
Finish
  1. Aluminum 2 items
  2. Black 5 items
  3. Black/Black 7 items
  4. Black/Nickel 6 items
  5. Black/TiN 7 items
  6. Blue 3 items
  7. DLC 1 item
  8. Gold 6 items
  9. Grey 5 items
  10. Melonite 1 item
  11. Nitride 3 items
  12. Polished 1 item
  13. Red 2 items
  14. Anodize 4 items
  15. PVD/CVD 3 items
  16. Quench Polish Quench (QPQ) 1 item
  17. Titanium Nitride (TiN) 3 items
Magazine Capacity
  1. 6rd 1 item
  2. 7rd 1 item
  3. 8rd 3 items
  4. 10rd 1 item
  5. 15rd 1 item
Manufacturer
  1. Aeroknox 1 item
  2. Agency Arms 2 items
  3. Align Tactical 12 items
  4. Angstadt Arms 1 item
  5. Apex Tactical Specialties 28 items
  6. ARC Division 4 items
  7. Armaspec 1 item
  8. Arms Republic 6 items
  9. Ascalon Arms 2 items
  10. Battle Arms Development 3 items
  11. CAA 1 item
  12. Dark Hour Defense 2 items
  13. Devil Dog Concepts 3 items
  14. DPM Systems Technologies 39 items
  15. Driven Arms Co. 1 item
  16. Elzetta Design LLC 1 item
  17. Emissary Development 1 item
  18. Empire 10 items
  19. Faction 1 item
  20. Faxon Firearms 6 items
  21. Fortis MFG 1 item
  22. Forward Controls Design 9 items
  23. Glock 1 item
  24. GoGun USA 3 items
  25. Grayguns 20 items
  26. Griffin Armament 3 items
  27. Handleitgrips 9 items
  28. HB Industries 8 items
  29. Iron City Rifle Works 1 item
  30. Kagwerks 4 items
  31. Killer Innovations 14 items
  32. Krebs Customs 1 item
  33. L2D Combat 5 items
  34. Lantac 7 items
  35. Laugo Arms 1 item
  36. Lone Wolf Arms 9 items
  37. Magpul Industries 3 items
  38. Midwest Industries 1 item
  39. Mirzon 3 items
  40. Modular Evolution LLC 1 item
  41. Next Level Armament 1 item
  42. NIGHT FISION 15 items
  43. Nighthawk Custom 4 items
  44. Nomad Defense 8 items
  45. Norsso 2 items
  46. Noveske 1 item
  47. Obsidian Arms 2 items
  48. Odin Works 1 item
  49. Polymer80 1 item
  50. Radian Weapons 1 item
  51. Rainier Arms, LLC 12 items
  52. Rainier Industries 1 item
  53. Red Dirt USA 6 items
  54. Reptilia Corp 1 item
  55. SCT Manufacturing 5 items
  56. Shield Arms 1 item
  57. Sig Mechanics 2 items
  58. Sig Sauer 35 items
  59. SLR Rifleworks 3 items
  60. Sprinco (Tactical Springs) 8 items
  61. Springer Precision 10 items
  62. Stoeger 1 item
  63. Strike Industries 6 items
  64. Tactical Development 11 items
  65. Taran Tactical Innovations 17 items
  66. Toni Systems 5 items
  67. TruCalibre 1 item
  68. True Precision 4 items
  69. Tyrant Designs 56 items
  70. Wilson Combat 1 item
  71. Wolff Gunsprings 2 items
  72. ZEV Technologies 1 item
Model
  1. Beretta 92X 1 item
  2. Beretta 92FS 1 item
  3. Beretta 96 1 item
  4. Beretta 98 1 item
  5. Canik TP9 1 item
  6. CZ 75 2 items
  7. CZ Scorpion 1 item
  8. CZ Shadow 2 items
  9. CZ P-01 1 item
  10. CZ P-10 9 items
  11. FNH 509 2 items
  12. Glock 17 56 items
  13. Glock 19 64 items
  14. Glock 19X 16 items
  15. Glock 20 9 items
  16. Glock 21 9 items
  17. Glock 22 32 items
  18. Glock 23 33 items
  19. Glock 24 20 items
  20. Glock 25 11 items
  21. Glock 26 27 items
  22. Glock 27 23 items
  23. Glock 28 8 items
  24. Glock 29 8 items
  25. Glock 30 8 items
  26. Glock 31 32 items
  27. Glock 32 28 items
  28. Glock 33 22 items
  29. Glock 34 39 items
  30. Glock 35 32 items
  31. Glock 36 5 items
  32. Glock 37 24 items
  33. Glock 38 19 items
  34. Glock 39 17 items
  35. Glock 40 8 items
  36. Glock 41 8 items
  37. Glock 42 5 items
  38. Glock 43 18 items
  39. Glock 43X 24 items
  40. Glock 44 8 items
  41. Glock 45 19 items
  42. Glock 47 3 items
  43. Glock 48 26 items
  44. H&K P2000 2 items
  45. H&K P30 3 items
  46. H&K VP9 5 items
  47. Nomad 9 4 items
  48. Sig P22X 3 items
  49. Sig P220 5 items
  50. Sig P226 7 items
  51. Sig P228 4 items
  52. Sig P229 5 items
  53. Sig P238 3 items
  54. Sig P320 71 items
  55. Sig P365 26 items
  56. Sig P365X 8 items
  57. Sig P365XL 18 items
  58. Sig P365 X-Macro 4 items
  59. Sig P938 3 items
  60. Sig MPX 1 item
  61. S&W M&P 4 items
  62. S&W M&P M2.0 4 items
  63. S&W M&P Shield 6 items
  64. Springfield Hellcat 6 items
  65. Staccato 2011 2 items
  66. Stoeger STR-9 1 item
  67. Walther PPQ 1 item
Mount
  1. M-LOK 1 item
  2. Picatinny 1 item
Optic Footprint
  1. Trijicon RMR 3 items
Option
  1. FN 509 1 item
  2. Standard 1 item
  3. 6lb 1 item
  4. 6.5lb 1 item
  5. 4lb 1 item
  6. (Green) - 13 lbs 2 items
  7. (Blue) - 15 lbs 2 items
  8. (Red) - 18 lbs 2 items
  9. CZ 11 items
  10. FNH 2 items
  11. Glock 114 items
  12. Heckler & Koch 1 item
  13. Sig Sauer 41 items
  14. Smith & Wesson 8 items
  15. Springfield 2 items
  16. Walther 1 item
  17. Right-Hand 1 item
  18. Left-Hand 3 items
  19. White/White 1 item
  20. White/Black 1 item
  21. Orange/Black 1 item
  22. White/Blank 1 item
  23. Flared 1 item
Platform
  1. 1911 5 items
  2. AR-10/LR308 1 item
  3. Beretta 1 item
  4. Canik 3 items
  5. CZ 13 items
  6. FNH 1 item
  7. Glock 165 items
  8. H&K 8 items
  9. Nomad 2 items
  10. Sig Sauer 117 items
  11. Smith & Wesson 16 items
  12. Springfield 9 items
  13. Staccato 5 items
  14. Stoeger 1 item
  15. Walther 4 items
Price
  1. $0.00 - $9.99 16 items
  2. $10.00 - $19.99 36 items
  3. $20.00 - $29.99 58 items
  4. $30.00 - $39.99 40 items
  5. $40.00 - $49.99 31 items
  6. $50.00 - $59.99 44 items
  7. $60.00 - $69.99 59 items
  8. $70.00 - $79.99 50 items
  9. $80.00 - $89.99 54 items
  10. $90.00 and above 71 items
Product Type
  1. Accessory 8 items
  2. Adapter Plate 1 item
  3. Backplate 3 items
  4. Basepad 11 items
  5. Bipod Mount 1 item
  6. Bolt Catch 1 item
  7. Charging Handle 5 items
  8. Compensator 34 items
  9. Connector 1 item
  10. Extended Slide Stop 4 items
  11. Failure Resistant Extractor 1 item
  12. Firing Pin 2 items
  13. Flashlight Accessory 1 item
  14. Grip Accessory 10 items
  15. Grip Module 11 items
  16. Guide Rod 34 items
  17. Handgun Barrel 2 items
  18. Handgun Grip 3 items
  19. Handgun Sights 13 items
  20. Laser 1 item
  21. Locking Block 3 items
  22. Magazine 7 items
  23. Magazine Accessory 2 items
  24. Magazine Catch 3 items
  25. Magazine Extension 7 items
  26. Magazine Release 24 items
  27. Magwell 47 items
  28. Muzzle Device Accessory 2 items
  29. Optic Plate 5 items
  30. Parts Kit 6 items
  31. Pistol Accessory 10 items
  32. Pistol Frame 10 items
  33. Pistol Part 48 items
  34. Pistol Sights 18 items
  35. Rear Sight 1 item
  36. Recoil Spring 34 items
  37. Red Dot Mount 1 item
  38. Safety Selector 2 items
  39. Sight Post 2 items
  40. Slide Parts Kit 6 items
  41. Slide Plate 7 items
  42. Spring 7 items
  43. Take Down / Pivot Pins 1 item
  44. Thumb Rest 5 items
  45. Trigger 45 items
Size
  1. Small 2 items
  2. Medium 1 item
  3. Large 2 items
  4. 3 Slot 1 item
  5. 5 Slot 1 item
  6. 9 Slot 1 item
  7. X-Compact 1 item
  8. Sub-Compact 1 item
  9. Compact 3 items
  10. Full 2 items
Thread Pitch
  1. 1/2x28 (9mm) 12 items
  2. M13.5x1 LH 1 item
Stock Status
  1. In stock 341 items
  2. Out of stock 118 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