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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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  1. Price $50.00 - $59.99 Remove This Item
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Barrel Length
  1. 3.1" 1 item
  2. 16" 3 items
Caliber
  1. 7.62x51 1 item
  2. 9mm 2 items
Category
  1. Receiver Parts 2 items
  2. Parts & Kits 16 items
  3. Barrels 1 item
  4. Buffer Systems 7 items
  5. Trigger Parts 3 items
  6. Gas Systems 2 items
  7. Muzzle Devices 8 items
  8. Grips 7 items
  9. Charging Handles 5 items
  10. Rifle Handguards 3 items
  11. Stocks & Braces 12 items
Color
Configuration
  1. Large Latch 1 item
  2. Medium Latch 1 item
  3. Small Latch 1 item
Finish
  1. Bead Blast Stainless Steel 1 item
  2. DLC 2 items
  3. Nitride 2 items
  4. Anodize 5 items
Gas Block Diameter
  1. .750" 1 item
Gas System Length
  1. Mid 3 items
Height
  1. Absolute Co-Witness 2 items
Manufacturer
  1. A3 Tactical 1 item
  2. Accu-Tac 1 item
  3. Angstadt Arms 2 items
  4. Apex Tactical Specialties 2 items
  5. Ascalon Arms 1 item
  6. B5 Systems 1 item
  7. Bravo Company MFG (BCM) 2 items
  8. Centurion Arms 1 item
  9. Cobalt Kinetics 1 item
  10. Emissary Development 2 items
  11. Fortis MFG 3 items
  12. Forward Controls Design 11 items
  13. Griffin Armament 1 item
  14. HB Industries 2 items
  15. JL Billet 1 item
  16. JMAC Customs 4 items
  17. JP Enterprises Inc 1 item
  18. KNS Precision 1 item
  19. Magpul Industries 2 items
  20. Next Level Armament 1 item
  21. NIGHT FISION 1 item
  22. Radian Weapons 1 item
  23. Rainier Arms, LLC 4 items
  24. Rehv Arms 1 item
  25. Rise Armament 1 item
  26. SB Tactical 1 item
  27. Sionics Weapon Systems 1 item
  28. Spinta Precision 1 item
  29. Stern Defense 1 item
  30. Strike Industries 2 items
  31. Torrent Suppressors 2 items
  32. TruCalibre 1 item
  33. True North Concepts 1 item
  34. Tyrant Designs 1 item
  35. VLTOR 5 items
  36. White Label Armory 1 item
Model
  1. CZ Scorpion 2 items
  2. FNH 509 1 item
  3. Sig MCX 1 item
Mount
  1. KeyMod 3 items
  2. M-LOK 3 items
  3. Picatinny 4 items
Option
  1. AR-15 9 items
  2. Long 1 item
  3. CZ 1 item
  4. FNH 1 item
  5. Non-Adjustable 1 item
  6. Dimpled 1 item
  7. Serrated 2 items
Platform
  1. AR-9 1 item
  2. AR-10/LR308 1 item
  3. AR-15 5 items
  4. CZ 2 items
  5. FNH 1 item
  6. H&K 1 item
  7. Sig Sauer 1 item
Product Type
  1. AR-15 Barrel 1 item
  2. AR-15 Charging Handle 2 items
  3. AR-15 Stripped Upper Receiver 1 item
  4. Bolt Catch 9 items
  5. Brace 1 item
  6. Buffer 3 items
  7. Buffer Kit 3 items
  8. Buffer Tube 1 item
  9. Charging Handle 4 items
  10. Compensator 2 items
  11. Failure Resistant Extractor 1 item
  12. Flash Hider 4 items
  13. Forearm Accesory 1 item
  14. Gas Block 2 items
  15. Grip Accessory 1 item
  16. Grip Module 1 item
  17. Handstop 3 items
  18. Lower Parts Kit 1 item
  19. Muzzle Brake 2 items
  20. Pistol Grip 3 items
  21. Rail Adapter 1 item
  22. Rail Panel 1 item
  23. Safety Selector 4 items
  24. Stock 5 items
  25. Stock Adapter 6 items
  26. Trigger 3 items
  27. Vertical Grip 1 item
Rail Length
  1. 10" 3 items
Size
  1. 9 Slot 3 items
Thread Pitch
  1. 1/2x28 (9mm) 1 item
  2. 1/2x28 (.22 cal) 2 items
  3. 1/2x36 1 item
  4. 5/8x24 (.30 cal) 1 item
  5. M14x1 LH 1 item
Twist Rate
  1. 1:10 1 item
Stock Status
  1. In stock 66 items Remove This Item
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