Loading...

Please wait...

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

881 Items

Page
per page
  1. Faxon Firearms Match Series M&P Shield 9mm Barrel
    Faxon Firearms Match Series M&P Shield 9mm Barrel
    $161.00
    View Details
  2. Faxon Firearms Match Series M&P Shield 9mm Threaded Barrel
    Faxon Firearms Match Series M&P Shield 9mm Threaded Barrel
    $170.20
    View Details
  3. Tyrant Designs Magwell for Glock 43X/48
    Tyrant Designs Magwell for Glock 43X/48
    $62.95
    +2
    View Details
  4. Nomad Defense Hybrid Guide Rod/Recoil Spring for Glock 19 Gen 4
    Nomad Defense Hybrid Guide Rod/Recoil Spring for Glock 19 Gen 4
    $25.00
    View Details
  5. Faxon Firearms Match Series 9mm Barrel for Glock 43
    Faxon Firearms Match Series 9mm Barrel for Glock 43
    $161.00
    View Details
  6. Faxon Firearms Match Series 9mm Threaded Barrel for Glock 43
    Faxon Firearms Match Series 9mm Threaded Barrel for Glock 43
    $175.75
    View Details
  7. Sig Sauer Grip Module Assembly 365XL w/ Manual Safety
    Sig Sauer Grip Module Assembly 365XL w/ Manual Safety
    $89.99
    View Details
  8. Mirzon Sig Sauer 320 Aluminum Base Pad
    Mirzon Sig Sauer 320 Aluminum Base Pad
    $22.99
    View Details
  9. Tyrant Designs Magwell For Glock 19 Gen 5
    Tyrant Designs Magwell For Glock 19 Gen 5
    $62.95
    +3
    View Details
  10. Rainier Arms Sig Sauer P320 Fiber Optic Sight Set - LOGO
    Rainier Arms Sig Sauer P320 Fiber Optic Sight Set - LOGO
    $50.00
    View Details
  11. Toni Systems Shadow I/II/TS/75B X3D Short Grip - Black
    Toni Systems Shadow I/II/TS/75B X3D Short Grip - Black
    $105.96
    View Details
  12. Toni Systems Shadow I/II/TS/75B X3D Long Grip - Black
    Toni Systems Shadow I/II/TS/75B X3D Long Grip - Black
    $105.96
    View Details
  13. Sig Sauer X-RAY3 Day/Night Sights
    Sig Sauer X-RAY3 Day/Night Sights
    $99.99
    View Details
  14. Sig Sauer P365 Recoil Spring Assembly
    Sig Sauer P365 Recoil Spring Assembly
    $39.99
    View Details
  15. Sig Sauer P365 OEM Magazine Release
    Sig Sauer P365 OEM Magazine Release
    $24.99
    View Details
  16. Sig Sauer P365XL 9mm Recoil Spring Assembly
    Sig Sauer P365XL 9mm Recoil Spring Assembly
    $39.99
    View Details
View as Grid List

881 Items

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
Shopping Options
Category
  1. Pistol parts 867 item
Price
  1. Less than $10 10 item
  2. $10 to $25 68 item
  3. $25 to $50 93 item
  4. $50 to $100 260 item
  5. $100 to $250 239 item
  6. $250 to $500 146 item
  7. $500 to $1000 22 item
  8. Greater than $1000 6 item
Manufacturer
  1. ARC Division 5 item
  2. Aeroknox 1 item
  3. Agency Arms 53 item
  4. Align Tactical 6 item
  5. Angstadt Arms 1 item
  6. Apex Tactical Specialties 54 item
  7. Armaspec 1 item
  8. Arms Republic 9 item
  9. Ascalon Arms 2 item
  10. Battle Arms Development 9 item
  11. Benchmade 1 item
  12. Brügger & Thomet (B&T) 1 item
  13. CAA 5 item
  14. CMC Triggers 3 item
  15. DPM Systems Technologies 55 item
  16. Danger Close Armament 15 item
  17. Dark Hour Defense 3 item
  18. Devil Dog Concepts 3 item
  19. Driven Arms Co. 1 item
  20. Elzetta Design LLC 1 item
  21. Emissary Development 1 item
  22. Empire 11 item
  23. Faction 1 item
  24. Faxon Firearms 24 item
  25. Fortis MFG 3 item
  26. Forward Controls Design 9 item
  27. Glock 1 item
  28. GoGun USA 3 item
  29. Grayguns 31 item
  30. Grey Ghost Precision 7 item
  31. Griffin Armament 12 item
  32. HB Industries 8 item
  33. HERA ARMS 1 item
  34. Haley Strategic 1 item
  35. Handleitgrips 21 item
  36. KNS Precision 1 item
  37. Kagwerks 3 item
  38. Killer Innovations 66 item
  39. Krebs Customs 1 item
  40. L2D Combat 22 item
  41. Lantac 19 item
  42. Laugo Arms 1 item
  43. Lone Wolf Arms 13 item
  44. Magpul Industries 3 item
  45. Matrix Arms 2 item
  46. Midwest Industries 1 item
  47. Mirzon 3 item
  48. Mischief Machine 11 item
  49. Modular Evolution LLC 1 item
  50. NIGHT FISION 25 item
  51. Next Level Armament 1 item
  52. Nighthawk Custom 6 item
  53. Nomad Defense 12 item
  54. Norsso 22 item
  55. Obsidian Arms 2 item
  56. Odin Works 1 item
  57. Polymer80 3 item
  58. Radian Weapons 3 item
  59. Rainier Arms, LLC 12 item
  60. Rainier Industries 1 item
  61. Red Dirt USA 3 item
  62. Reptilia Corp 1 item
  63. S3F Solutions 6 item
  64. SLR Rifleworks 3 item
  65. Shalotek 23 item
  66. Sharps Bros 12 item
  67. Sig Mechanics 1 item
  68. Sig Sauer 44 item
  69. Spinta Precision 7 item
  70. Sprinco (Tactical Springs) 8 item
  71. Springer Precision 10 item
  72. Stoeger 1 item
  73. Strike Industries 8 item
  74. Swampfox 2 item
  75. TXC Holsters 1 item
  76. Tactical Development 11 item
  77. Tam Tamography 1 item
  78. Taran Tactical Innovations 18 item
  79. Taylor Freelance 1 item
  80. The Gun Co. 3 item
  81. Timney Triggers 2 item
  82. Toni Systems 6 item
  83. Trijicon 2 item
  84. Trinity Nevada 8 item
  85. TruCalibre 1 item
  86. True Precision 28 item
  87. Tyrant Designs 56 item
  88. Wilson Combat 1 item
  89. ZEV Technologies 5 item
  90. Zaffiri Precision 3 item
Color
Caliber
  1. .45 ACP 2 item
  2. 9mm 139 item
Finish
  1. Aluminum 2 item
  2. Anodize 5 item
  3. Battleworn 2 item
  4. Black 15 item
  5. Black DLC 7 item
  6. Black Nitride 2 item
  7. Black/Black 7 item
  8. Black/Nickel 6 item
  9. Black/TiN 7 item
  10. Blue 3 item
  11. Bronze 2 item
  12. Cerakote 1 item
  13. Chameleon 1 item
  14. Clear 1 item
  15. DLC 64 item
  16. Gold 12 item
  17. Gray 5 item
  18. Grey 5 item
  19. MDC (Gray) 1 item
  20. Melonite 2 item
  21. Molecular Dense Coating (MDC) 18 item
  22. NeoChromatic 1 item
  23. Nitride 18 item
  24. PVD/CVD 7 item
  25. Polished 1 item
  26. Quench Polish Quench (QPQ) 1 item
  27. Red 2 item
  28. Stainless Steel 1 item
  29. Titanium Nitride 1 item
  30. Titanium Nitride (TiN) 53 item
  31. Titanium-Carbo Nitride (TiCN) 3 item
Barrel Length
  1. 3.1" 2 item
  2. 3.25" 1 item
  3. 3.5" 1 item
  4. 3.54" 1 item
  5. 3.6" 3 item
  6. 3.66" 1 item
  7. 3.7" 4 item
  8. 3.86" 1 item
  9. 3.9" 9 item
  10. 4" 1 item
  11. 4.02" 2 item
  12. 4.3" 1 item
  13. 4.37" 1 item
  14. 4.4" 1 item
  15. 4.46" 1 item
  16. 4.5" 2 item
  17. 4.57" 2 item
  18. 4.6" 2 item
  19. 5" 2 item
Option
  1. (Blue) - 15 lbs 2 item
  2. (Green) - 13 lbs 2 item
  3. (Red) - 18 lbs 2 item
  4. 4lb 1 item
  5. 6.5lb 1 item
  6. 6lb 1 item
  7. CZ 21 item
  8. FN 509 1 item
  9. FNH 7 item
  10. Flared 1 item
  11. Glock 262 item
  12. Glock 17 1 item
  13. Heckler & Koch 1 item
  14. Left-Hand 1 item
  15. Manual Safety 1 item
  16. No Safety 2 item
  17. Orange/Black 1 item
  18. Right-Hand 1 item
  19. Safety 2 item
  20. Sig Sauer 95 item
  21. Sig Sauer P Series 1 item
  22. Smith & Wesson 15 item
  23. Springfield 4 item
  24. Standard 1 item
  25. V1 3 item
  26. V2 3 item
  27. V3 2 item
  28. V4 1 item
  29. Walther 2 item
  30. White/Black 1 item
  31. White/Blank 1 item
  32. White/White 1 item
Profile
  1. Non-fluted 1 item
  2. SDM 1 item
Gas Length
  1. Pistol 1 item
Size
Compact
Full
X-Compact
Large
Small
Sub-Compact
Micro-Compact
Medium
5 Slot
9 Slot
3 Slot
Carry
Mount
  1. M-LOK 1 item
  2. Picatinny 2 item
Stock Status
  1. In Stock 642 item
  2. Out of Stock 239 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