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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.

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Items 49-64 of 318

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  2. Forward Controls Design ACF AR-15 Ambidextrous Charging Handle
    Forward Controls Design ACF AR-15 Ambidextrous Charging Handle
    $114.00
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  15. JMac Customs TS-8RP Rise and Rubber Butt Pad Triangle Stock
    JMac Customs TS-8RP Rise and Rubber Butt Pad Triangle Stock
    $157.45
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  16. JMac Customs TS-9 Rubber Butt Pad Triangle Stock
    JMac Customs TS-9 Rubber Butt Pad Triangle Stock
    $157.45
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Items 49-64 of 318

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  1. Price $100.00 - $199.99 Remove This Item
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Barrel Length
  1. 4" 1 item
  2. 4.5" 2 items
  3. 6" 2 items
  4. 6.5" 1 item
  5. 6.75" 1 item
  6. 7" 1 item
  7. 7.5" 2 items
  8. 8" 4 items
  9. 8.5" 1 item
  10. 9" 1 item
  11. 10" 1 item
  12. 10.3" 1 item
  13. 10.5" 6 items
  14. 10.7" 2 items
  15. 11.5" 3 items
  16. 12.5" 2 items
  17. 13.7" 2 items
  18. 13.9" 2 items
  19. 14.5" 3 items
  20. 16" 10 items
  21. 18" 4 items
Barrel Profile
  1. Lightweight 3 items
Caliber
  1. .223/5.56 5 items
  2. .223 Wylde 1 item
  3. .30 Cal 2 items
  4. .308 6 items
  5. .45 ACP 2 items
  6. 12 Gauge 1 item
  7. 300 Blackout 9 items
  8. 5.56 NATO 27 items
  9. 5.56mm 2 items
  10. 6.8 SPC 1 item
  11. 7.62mm 3 items
  12. 7.62x39 4 items
  13. 7.62x51 1 item
  14. 8.6 Blackout 1 item
  15. 9mm 8 items
Category
  1. Receiver Parts 38 items
  2. Parts & Kits 6 items
  3. Barrels 23 items
  4. Rifle Barrels 16 items
  5. Buffer Systems 15 items
  6. Trigger Parts 24 items
  7. Gas Systems 10 items
  8. Muzzle Devices 64 items
  9. Bolt Parts 18 items
  10. Grips 12 items
  11. Charging Handles 16 items
  12. Rifle Handguards 36 items
  13. Stocks & Braces 39 items
Color
Configuration
  1. AR-10 1 item
  2. AR-15 4 items
  3. Curved 8 items
  4. Flat 5 items
  5. Gen 3 1 item
  6. M-LOK 1 item
  7. Normal CQR 2 items
  8. Restricted CQR 2 items
  9. Straight 4 items
  10. .625 DIA 1 item
  11. .750 DIA 1 item
  12. Enhanced Finger Placement (EFP) 1 item
  13. AK74 [WL 5.62"/143mm][HD .32"/8mm] 1 item
  14. AIMS-74 [WL 4.80"/122mm][HD .32"/8mm] 1 item
  15. AK-105 JBI Custom [WL 4.20"/107mm][HD .45"/11mm] 1 item
  16. AKM Large Bore [WL 5.83"/148mm][HD .31"/8mm] 1 item
  17. AMD65 [WL 4.67"/119mm][HD .31"/8mm] 1 item
  18. Arsenal Rifle Small Bore [WL 5.75"/146mm][HD .30"/8mm] 1 item
  19. Arsenal Rifle Large Bore [WL 5.75"/146mm][HD .30"/8mm] 1 item
  20. 5.45 Krinkov [WL 2.03"/52mm][HD .32"/8mm] 1 item
  21. 7.62 Krinkov [WL 2.22"/56mm][HD .31"/8mm] 1 item
  22. Bulgarian 5.45 Krinkov [WL 2.03"/52mm][HD .42"/11mm] 1 item
  23. Bulgarian AK74 [WL 5.62"/143mm][HD .42"/11mm] 1 item
  24. DRACO [WL 4.78"/121mm][HD .32"/8mm] 1 item
  25. Galil Ace [WL 2.15"/118mm][HD .32"/8mm] 1 item
  26. M85 [WL 4.41"/112mm][HD .31"/8mm] 1 item
  27. M92 2.218 [WL 3.90"/99mm][HD .30"/8mm] 1 item
  28. PSL [WL 3.90"/99mm][HD .30"/8mm] 1 item
  29. Valmet M76 / Galil Classic ARM [WL 4.20"/107mm][HD .45"/11mm] 1 item
  30. VEPR Small Bore [WL 5.62"/143mm][HD .32"/8mm] 1 item
  31. VEPR Big Bore [WL 5.62"/143mm][HD .32"/8mm] 1 item
  32. WZ89 Onyks [WL 2.15"/55mm][HD .32"/8mm] 1 item
Finish
  1. Black 6 items
  2. Case Hardened 1 item
  3. Carbon Fiber 1 item
  4. FDE 1 item
  5. Nickel Boron 1 item
  6. Nitride 20 items
  7. Phosphate 5 items
  8. Satin 1 item
  9. Anodize 14 items
  10. PVD/CVD 1 item
  11. Quench Polish Quench (QPQ) 2 items
Gas Block Diameter
  1. .625" 9 items
  2. .750" 27 items
  3. .875" 4 items
  4. .936" 4 items
Gas System Length
  1. Blowback 3 items
  2. Pistol -1 1 item
  3. Pistol 11 items
  4. Carbine 8 items
  5. Mid 13 items
  6. Intermediate 2 items
  7. Rifle 2 items
Inside Diameter
  1. 1.3" 2 items
  2. 1.31" 1 item
  3. 1.315" 1 item
  4. 1.34" 1 item
  5. 1.385" 1 item
  6. 1.4" 1 item
  7. 1.54" 1 item
Is Firearms?
  1. No 318 items
Manufacturer
  1. A3 Tactical 9 items
  2. Aero Precision 5 items
  3. Airborne Arms 3 items
  4. ALG Defense 1 item
  5. Andro Corp Industries 1 item
  6. Angstadt Arms 1 item
  7. Arms Republic 2 items
  8. Brügger & Thomet (B&T) 1 item
  9. Ballistic Advantage 7 items
  10. Battle Arms Development 2 items
  11. Blitzkrieg Components 1 item
  12. BOBRO 1 item
  13. Bootleg 1 item
  14. Bravo Company MFG (BCM) 5 items
  15. Brigand Arms 1 item
  16. Centurion Arms 2 items
  17. Chisel Machining 2 items
  18. CMC Triggers 1 item
  19. Cross Machine Tool (CMT) 2 items
  20. Dead Air Armament 1 item
  21. Dead Foot Arms LLC 1 item
  22. Devil Dog Concepts 1 item
  23. DPM Systems Technologies 2 items
  24. F-1 Firearms 1 item
  25. F5 MFG 1 item
  26. Faxon Firearms 13 items
  27. Ferfrans 1 item
  28. Fortis MFG 9 items
  29. Forward Controls Design 10 items
  30. Gear Head Works 3 items
  31. Geissele 4 items
  32. Griffin Armament 5 items
  33. HB Industries 2 items
  34. HERA ARMS 6 items
  35. HUXWRX 2 items
  36. Icon Defense 3 items
  37. Iron City Rifle Works 1 item
  38. Jacob Grey 1 item
  39. JK Armament 2 items
  40. JL Billet 2 items
  41. JMAC Customs 32 items
  42. JP Enterprises Inc 6 items
  43. Killer Innovations 1 item
  44. Kinetic Development Group 1 item
  45. KNS Precision 2 items
  46. Krebs Customs 1 item
  47. KynSHOT 4 items
  48. Lantac 5 items
  49. LUTH-AR 1 item
  50. Magpul Industries 6 items
  51. Maxim Defense 3 items
  52. Midwest Industries 8 items
  53. Next Level Armament 5 items
  54. Noveske 4 items
  55. Odin Works 1 item
  56. Patriot Ordnance Factory (POF) 2 items
  57. Precision Armament 8 items
  58. Primary Weapon Systems 1 item
  59. Q, LLC 1 item
  60. Quarter Circle 10 1 item
  61. Radian Weapons 6 items
  62. Raidworx 1 item
  63. Rainier Arms, LLC 18 items
  64. Rainier Industries 1 item
  65. Reptilia Corp 4 items
  66. Rex Silentium 1 item
  67. Riflespeed 1 item
  68. Rise Armament 10 items
  69. Rubber City Armory 1 item
  70. SB Tactical 1 item
  71. SCALARWORKS 1 item
  72. Seekins Precision 1 item
  73. Sharps Bros 5 items
  74. Sig Sauer 1 item
  75. SLR Rifleworks 2 items
  76. Sons of Liberty Gun Works 16 items
  77. Spinta Precision 3 items
  78. Stern Defense 5 items
  79. Strike Industries 1 item
  80. Superlative Arms 4 items
  81. Surefire 2 items
  82. Timney Triggers 4 items
  83. Triggertech 4 items
  84. Tyrant Designs 4 items
  85. V Seven Weapon Systems 7 items
  86. VKTR Industries 1 item
  87. WMD Guns 1 item
Model
  1. CZ Scorpion 5 items
  2. Sig MPX 2 items
Mount
  1. M-LOK 22 items
  2. Picatinny 12 items
Option
  1. AK-47/74 1 item
  2. AR-10 9 items
  3. AR-15 47 items
  4. Front 1 item
  5. Mid 1 item
  6. Rear 1 item
  7. WA 1 item
  8. KS 1 item
  9. CZ 6 items
  10. Sharps Bros 1 item
  11. Sig Sauer 1 item
  12. Small Lever 1 item
  13. Large Lever 1 item
  14. Adjustable 4 items
  15. Non-Adjustable 2 items
Platform
  1. 10-22 1 item
  2. AR-9 3 items
  3. AR-10/LR308 3 items
  4. AR-15 42 items
  5. AK47/74 2 items
  6. CZ-USA 5 items
  7. Sig Sauer 2 items
Price
  1. $100.00 - $109.99 46 items
  2. $110.00 - $119.99 38 items
  3. $120.00 - $129.99 33 items
  4. $130.00 - $139.99 34 items
  5. $140.00 - $149.99 37 items
  6. $150.00 - $159.99 33 items
  7. $160.00 - $169.99 26 items
  8. $170.00 - $179.99 27 items
  9. $180.00 - $189.99 17 items
  10. $190.00 and above 27 items
Product Type
  1. 10/22 Receiver 1 item
  2. AK Accessories 1 item
  3. Angled Grip 1 item
  4. AR-10 / LR 308 Charging Handle 2 items
  5. AR-10 Stripped Lower Receiver 1 item
  6. AR-10 Stripped Upper Receiver 1 item
  7. AR-15 Assembled Upper Receiver 3 items
  8. AR-15 Barrel 23 items
  9. AR-15 Charging Handle 9 items
  10. AR-15 Handguard 18 items
  11. AR-15 Rifle 1 item
  12. AR-15 Stripped Lower Receiver 17 items
  13. AR-15 Stripped Upper Receiver 13 items
  14. Barrel 16 items
  15. Blast Shield 1 item
  16. Bolt 3 items
  17. Bolt Carrier Group 16 items
  18. Brace 8 items
  19. Buffer 8 items
  20. Buffer Kit 2 items
  21. Buffer Spring 3 items
  22. Buffer Tube 2 items
  23. Charging Handle 8 items
  24. Chassis 1 item
  25. Compensator 9 items
  26. Flash Hider 19 items
  27. Forearm Accesory 1 item
  28. Gas Block 7 items
  29. Handguard 19 items
  30. Iron Sight 1 item
  31. Lower Parts Kit 3 items
  32. Lower Receiver 1 item
  33. Muzzle Brake 33 items
  34. Muzzle Device Accessory 3 items
  35. Parts Kit 1 item
  36. Pistol Grip 8 items
  37. Piston 1 item
  38. Piston System 3 items
  39. Rail Adapter 3 items
  40. Stock 20 items
  41. Stock Accessory 4 items
  42. Stock Adapter 7 items
  43. Trigger 24 items
  44. Vertical Grip 2 items
Rail Length
  1. 4" 1 item
  2. 4.25" 3 items
  3. 4.5" 2 items
  4. 5.5" 1 item
  5. 6.0" 1 item
  6. 6.25" 2 items
  7. 6.5" 1 item
  8. 6.7" 2 items
  9. 6.75" 3 items
  10. 7" 7 items
  11. 7.5" 2 items
  12. 7.9" 1 item
  13. 8" 1 item
  14. 8.6" 1 item
  15. 9" 4 items
  16. 9.1" 1 item
  17. 9.2" 1 item
  18. 9.5" 5 items
  19. 9.55" 1 item
  20. 9.6" 1 item
  21. 10" 3 items
  22. 10.25" 1 item
  23. 10.3" 1 item
  24. 10.5" 6 items
  25. 10.7" 2 items
  26. 11.25" 1 item
  27. 11.5" 4 items
  28. 11.7" 2 items
  29. 12" 4 items
  30. 12.3" 1 item
  31. 12.4" 1 item
  32. 12.5" 6 items
  33. 12.6" 1 item
  34. 12.8" 1 item
  35. 13" 2 items
  36. 13.5" 4 items
  37. 13.7" 3 items
  38. 13.8" 1 item
  39. 14" 2 items
  40. 14.3" 1 item
  41. 15" 14 items
  42. 15.3" 1 item
  43. 16.3" 1 item
  44. 16.5" 1 item
Size
  1. Medium 1 item
  2. Large 1 item
  3. 5 Slot 1 item
  4. 1.9" 1 item
  5. 2.1" 1 item
  6. 3.3" 1 item
  7. 4.3" 1 item
  8. 4.8" 1 item
  9. 5.8" 1 item
Thread Pitch
  1. 1/2x28 50 items
  2. 1/2x36 3 items
  3. 5/8x24 30 items
  4. M13.5x1 LH 1 item
  5. M14x1 LH 5 items
  6. M24x1.5 RH 1 item
  7. 26-1.5 LH 1 item
Threaded
  1. Yes 11 items
Twist Rate
  1. 1:5 1 item
  2. 1:7 17 items
  3. 1:8 9 items
  4. 1:10 5 items
Stock Status
  1. In stock 318 items Remove This Item
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