Pursue Your Passion
My Cart

Rainier Arms on Instagram

Menu
Account
raineirarms

Rifle Parts

Whether you're building a new rifle from scratch or looking to upgrade an existing firearm, our vast selection of rifle parts has everything you are going to need in that journey. At Rainier Arms' selection of rifle parts, you can find a wide variety of products including lower and upper parts, trigger parts, muzzle devices, and many more. 

Explore our selection of high-quality parts coming from various leading manufacturers like Strike Industries, Magpul, BCM, and many more.

Also, don't forget to check our specially-made Rainier Arms barrels for your firearms.

View as Grid List

Items 97-112 of 759

Page
per page
View as Grid List

Items 97-112 of 759

Page
per page
Shop By
Now Shopping by
  1. Price $0.00 - $99.99 Remove This Item
Clear All
Shopping Options
Barrel Length
  1. 3.1" 1 item
  2. 4" 1 item
  3. 4.5" 2 items
  4. 5.25" 1 item
  5. 5.5" 1 item
  6. 6" 1 item
  7. 7" 2 items
  8. 7.5" 1 item
  9. 8" 1 item
  10. 10.3" 1 item
  11. 16" 7 items
  12. 18" 8 items
Caliber
  1. .22 Cal 2 items
  2. .223/5.56 8 items
  3. .223 Rem 1 item
  4. .30 Cal 7 items
  5. .308 4 items
  6. 5.56X45 1 item
  7. 5.56 NATO 9 items
  8. 5.56mm 5 items
  9. 7.62mm 1 item
  10. 7.62x51 1 item
  11. 9mm 22 items
Category
  1. Receiver Parts 13 items
  2. Parts & Kits 183 items
  3. Barrels 9 items
  4. Buffer Systems 32 items
  5. Trigger Parts 39 items
  6. Gas Systems 31 items
  7. Muzzle Devices 112 items
  8. Bolt Parts 14 items
  9. Grips 136 items
  10. Charging Handles 46 items
  11. Rifle Handguards 43 items
  12. Stocks & Braces 67 items
  13. MILSPEC Parts 43 items
Color
Configuration
  1. 90 Degree 1 item
  2. AR-10 1 item
  3. AR-15 10 items
  4. Cross 1 item
  5. Curved 1 item
  6. Flaming Pig 1 item
  7. Flat 1 item
  8. Gen 3 1 item
  9. Ghetto Blaster 1 item
  10. M-LOK 4 items
  11. Normal CQR 2 items
  12. Restricted CQR 2 items
  13. Rifle 1 item
  14. Right Hand 1 item
  15. .625 DIA 5 items
  16. .750 DIA 4 items
  17. .800 DIA 2 items
  18. .875 DIA 3 items
  19. .936 DIA 3 items
  20. Large Latch 1 item
  21. Medium Latch 1 item
  22. Small Latch 1 item
Finish
  1. Bead Blast Stainless Steel 1 item
  2. Black 13 items
  3. Blue 1 item
  4. DLC 3 items
  5. FDE 3 items
  6. Gold 1 item
  7. Grey 1 item
  8. Melonite 1 item
  9. NiB-X 3 items
  10. Nickel Boron 3 items
  11. Nitride 8 items
  12. Nitromet 6 items
  13. Phosphate 1 item
  14. Red 3 items
  15. Anodize 20 items
Gas Block Diameter
  1. .625" 6 items
  2. .750" 14 items
  3. .875" 5 items
  4. .936" 5 items
Gas System Length
  1. Blowback 6 items
  2. Pistol -1 2 items
  3. Pistol 7 items
  4. Carbine 5 items
  5. Micro 1 item
  6. Mid 11 items
  7. Intermediate 12 items
  8. Patrol 1 item
  9. Rifle 4 items
  10. Rifle +1 2 items
  11. Rifle +2 2 items
Height
  1. Absolute Co-Witness 2 items
  2. Low 1 item
  3. Medium 1 item
  4. High 1 item
Inside Diameter
  1. 1.385" 1 item
Magazine Capacity
  1. 32rd 1 item
Manufacturer
  1. A3 Tactical 15 items
  2. Accu-Tac 1 item
  3. Advanced Armament Company (AAC) 3 items
  4. Aero Precision 3 items
  5. Airborne Arms 1 item
  6. ALG Defense 4 items
  7. Andro Corp Industries 4 items
  8. Angstadt Arms 4 items
  9. Apex Tactical Specialties 4 items
  10. Arisaka 6 items
  11. Armaspec 2 items
  12. Arms Republic 7 items
  13. Ascalon Arms 6 items
  14. B5 Systems 13 items
  15. Battle Arms Development 10 items
  16. Black River MFG 1 item
  17. Blitzkrieg Components 13 items
  18. Bootleg 1 item
  19. Bravo Company MFG (BCM) 35 items
  20. Brigand Arms 1 item
  21. Centurion Arms 4 items
  22. Chisel Machining 1 item
  23. Cobalt Kinetics 1 item
  24. Cross Machine Tool (CMT) 6 items
  25. Daniel Defense 3 items
  26. Dead Air Armament 5 items
  27. Die Free Co 2 items
  28. Drew Meyers Defense 6 items
  29. Driven Arms Co. 16 items
  30. Eartune 1 item
  31. Elftmann Tactical 1 item
  32. Emissary Development 7 items
  33. Ergo Grips 1 item
  34. F-1 Firearms 2 items
  35. Faxon Firearms 3 items
  36. Fortis MFG 32 items
  37. Forward Controls Design 64 items
  38. Gear Head Works 2 items
  39. Geissele 7 items
  40. Grey Ghost Precision 1 item
  41. Griffin Armament 8 items
  42. Half Cocked Arms (HCA) 1 item
  43. HB Industries 14 items
  44. HERA ARMS 13 items
  45. Heresy Design 2 items
  46. Hiperfire 8 items
  47. Icarus Precision 2 items
  48. James Madison Tactical (JMT) 2 items
  49. JK Armament 10 items
  50. JL Billet 3 items
  51. JMAC Customs 19 items
  52. JP Enterprises Inc 8 items
  53. KAK Industries 1 item
  54. Kinetic Development Group 2 items
  55. Knight’s Armament Company (KAC) 2 items
  56. KNS Precision 7 items
  57. Kaw Valley Precision 2 items
  58. Kratos Design Group 2 items
  59. Krebs Customs 3 items
  60. Lantac 3 items
  61. LUTH-AR 2 items
  62. Mad Pig 4 items
  63. Magpul Industries 52 items
  64. Maxim Defense 2 items
  65. Midwest Industries 3 items
  66. Mission First Tactical 3 items
  67. Multitasker Tools 1 item
  68. NEMO Arms 3 items
  69. Neverwear Springs 1 item
  70. Next Level Armament 12 items
  71. NIGHT FISION 1 item
  72. Noveske 7 items
  73. Odin Works 1 item
  74. Patriot Ordnance Factory (POF) 1 item
  75. Precision Armament 3 items
  76. Primary Weapon Systems 9 items
  77. Q, LLC 11 items
  78. Radian Weapons 8 items
  79. Rainier Arms, LLC 26 items
  80. Rainier Industries 13 items
  81. Rehv Arms 2 items
  82. Reptilia Corp 4 items
  83. Riflespeed 1 item
  84. Rise Armament 6 items
  85. RogueOps 1 item
  86. SB Tactical 5 items
  87. Seekins Precision 1 item
  88. Sharps Bros 1 item
  89. Shooting Innovations 2 items
  90. Sig Sauer 1 item
  91. Silencerco 5 items
  92. Sionics Weapon Systems 1 item
  93. Sons of Liberty Gun Works 5 items
  94. Spinta Precision 1 item
  95. Sprinco (Tactical Springs) 7 items
  96. Stag Arms 1 item
  97. Stern Defense 1 item
  98. Strike Industries 24 items
  99. Superlative Arms 5 items
  100. Tactical Edge Arms 1 item
  101. Tango Down 1 item
  102. Timney Triggers 1 item
  103. Tippmann Arms 1 item
  104. Torrent Suppressors 2 items
  105. TruCalibre 5 items
  106. True North Concepts 10 items
  107. Tyrant Designs 8 items
  108. Underground Tactical 1 item
  109. Unity Tactical 1 item
  110. V Seven Weapon Systems 15 items
  111. VLTOR 8 items
  112. White Label Armory 2 items
  113. WMD Guns 10 items
Model
  1. CZ Bren 1 item
  2. CZ Scorpion 10 items
  3. FNH 509 1 item
  4. Sig MCX 1 item
  5. Sig MPX 1 item
  6. Springfield Hellcat 1 item
Mount
  1. KeyMod 6 items
  2. M-LOK 54 items
  3. Other 5 items
  4. Picatinny 43 items
Option
  1. AK-47/74 8 items
  2. AR-9 2 items
  3. AR-10 16 items
  4. AR-15 71 items
  5. Standard 1 item
  6. 4.720" 2 items
  7. 6.295" 2 items
  8. 7.870" 2 items
  9. 9.445" 2 items
  10. Bull's Eye 1 item
  11. Vertical Lines 1 item
  12. Minimal 1 item
  13. White - Standard Power 1 item
  14. Blue - Enhanced Power 1 item
  15. Red - Extra Power 1 item
  16. Orange - Extra Extra Power 1 item
  17. Yellow - Reduced Power 1 item
  18. White/Red - Intermediate Power 1 item
  19. Green - Rifle Length Standard Power 1 item
  20. Long 1 item
  21. 1.125-28 TPI 3 Lug/Booster Adaptor 1 item
  22. 1.180-24 TPI 3 Lug/Booster Adaptor 1 item
  23. 9mm 1 item
  24. CZ 9 items
  25. FNH 1 item
  26. Heckler & Koch 1 item
  27. Springfield 1 item
  28. Holed 1 item
  29. Profile 1 item
  30. Small Lever 1 item
  31. Green Laser 1 item
  32. Adjustable 5 items
  33. Non-Adjustable 15 items
  34. Dimpled 3 items
  35. Serrated 5 items
Platform
  1. AR-9 1 item
  2. AR-10/LR308 5 items
  3. AR-15 44 items
  4. AK47/74 6 items
  5. CZ 10 items
  6. FNH 1 item
  7. H&K 2 items
  8. Sig Sauer 2 items
  9. Springfield 1 item
Price
  1. $0.00 - $9.99 69 items
  2. $10.00 - $19.99 103 items
  3. $20.00 - $29.99 101 items
  4. $30.00 - $39.99 96 items
  5. $40.00 - $49.99 74 items
  6. $50.00 - $59.99 66 items
  7. $60.00 - $69.99 49 items
  8. $70.00 - $79.99 61 items
  9. $80.00 - $89.99 71 items
  10. $90.00 and above 69 items
Product Type
  1. Accessory 5 items
  2. Adapter Plate 2 items
  3. AK Handguard 1 item
  4. Angled Grip 19 items
  5. Anti Walk Pins 1 item
  6. AR-10 / LR 308 Charging Handle 2 items
  7. AR-10 Handguard 1 item
  8. AR-15 Assembled Upper Receiver 1 item
  9. AR-15 Barrel 9 items
  10. AR-15 Charging Handle 21 items
  11. AR-15 Complete Lower Receiver 1 item
  12. AR-15 Handguard 3 items
  13. AR-15 Stripped Lower Receiver 3 items
  14. AR-15 Stripped Upper Receiver 6 items
  15. AR-9 Upper Receiver 1 item
  16. Barrel Adapter 2 items
  17. Barrel Nut 1 item
  18. Blast Shield 1 item
  19. Bolt Catch 17 items
  20. Brace 5 items
  21. Buffer 17 items
  22. Buffer Kit 7 items
  23. Buffer Spring 7 items
  24. Buffer Tube 8 items
  25. Cam Pin 5 items
  26. Castle Nut 5 items
  27. Castle Nut / End Plate 5 items
  28. Cable Clip 1 item
  29. Charging Handle 27 items
  30. Cheek Riser 4 items
  31. Compensator 38 items
  32. Crush Washer 3 items
  33. Dust Cover 11 items
  34. End Cap 7 items
  35. End Plate 12 items
  36. Failure Resistant Extractor 2 items
  37. Finger Stop 2 items
  38. Firing Pin 3 items
  39. Flash Hider 34 items
  40. Forearm Accesory 14 items
  41. Forward Assist 6 items
  42. Forward Assist Spring 1 item
  43. Front Sight 2 items
  44. Gas Block 24 items
  45. Gas Rings 3 items
  46. Gas Tube 5 items
  47. Grip Accessory 10 items
  48. Grip Module 1 item
  49. Grip Screw 1 item
  50. Handguard 3 items
  51. Handguard Adaptor 2 items
  52. Handstop 38 items
  53. Key Screw 1 item
  54. Lower Parts Kit 12 items
  55. Magazine 1 item
  56. Magazine Button 2 items
  57. Magazine Catch 9 items
  58. Magazine Release 15 items
  59. Magazine Spring 1 item
  60. Magwell 4 items
  61. Muzzle Brake 27 items
  62. Muzzle Device Accessory 7 items
  63. Parts Kit 8 items
  64. Pistol Grip 47 items
  65. Pistol Part 1 item
  66. Port Door 5 items
  67. Port Door Rod 2 items
  68. Port Door Spring 1 item
  69. Rail Adapter 4 items
  70. Rail Panel 13 items
  71. Rail Section 1 item
  72. Recoil Spring 1 item
  73. Retainer Pin 2 items
  74. Roll Pin 2 items
  75. Safety Selector 29 items
  76. Shim Set 2 items
  77. Sight Post 12 items
  78. Spring 8 items
  79. Stock 31 items
  80. Stock Accessory 10 items
  81. Stock Adapter 16 items
  82. Suppressor Accessory 1 item
  83. Take Down / Pivot Pins 18 items
  84. Trigger 19 items
  85. Trigger / Hammer Pins 3 items
  86. Trigger Guard 14 items
  87. Upper Parts Kit 2 items
  88. Vertical Grip 24 items
  89. Weight 1 item
Rail Length
  1. 4" 1 item
  2. 7" 1 item
  3. 7.3" 1 item
  4. 7.8" 1 item
  5. 9" 1 item
  6. 9.2" 1 item
  7. 10" 6 items
  8. 11.25" 1 item
  9. 12" 10 items
  10. 12.6" 2 items
  11. 13.5" 1 item
  12. 14" 1 item
  13. 15" 2 items
  14. 16.5" 1 item
Size
  1. 3" 1 item
  2. Small 1 item
  3. Medium 4 items
  4. Large 4 items
  5. X-Large 2 items
  6. 6" 1 item
  7. 3 Slot 1 item
  8. 5 Slot 3 items
  9. 9 Slot 11 items
  10. 1/2" 1 item
  11. 5/8" 1 item
Thread Pitch
  1. .578x28 1 item
  2. 1.375-24 1 item
  3. 1/2x28 (9mm) 19 items
  4. 1/2x28 (.22 cal) 56 items
  5. 1/2x32 4 items
  6. 1/2x36 8 items
  7. 3/4x24 1 item
  8. 5/8x24 (.30 cal) 35 items
  9. M13.5x1 LH 7 items
  10. M14x1 LH 2 items
Threaded
  1. Yes 18 items
Twist Rate
  1. 1:7 2 items
  2. 1:10 6 items
Stock Status
  1. In stock 757 items Remove This Item
  2. Out of stock 1 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.
Google Customer Reviews Google Customer Reviews