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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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Barrel Length
  1. 5.5" 1 item
Caliber
  1. .223/5.56 1 item
  2. 5.56mm 1 item
  3. 7.62x39 1 item
  4. 8.6 Blackout 1 item
  5. 9mm 1 item
Category
  1. Receiver Parts 5 items
  2. Parts & Kits 1 item
  3. Barrels 1 item
  4. Trigger Parts 2 items
  5. Gas Systems 2 items
  6. Muzzle Devices 13 items
  7. Grips 3 items
  8. Charging Handles 4 items
Color
Configuration
  1. AR-10 1 item
  2. .750 DIA 1 item
Finish
  1. Cerakote 1 item
  2. DLC 1 item
  3. Nitride 2 items
  4. Anodize 4 items
Gas Block Diameter
  1. .750" 1 item
Gas System Length
  1. Blowback 1 item
Manufacturer
  1. A3 Tactical 2 items
  2. Aeroknox 2 items
  3. Angstadt Arms 1 item
  4. Arms Republic 1 item
  5. Ballistic Advantage 3 items
  6. Battle Arms Development 1 item
  7. Bravo Company MFG (BCM) 1 item
  8. Faxon Firearms 1 item
  9. Griffin Armament 1 item
  10. Hiperfire 2 items
  11. JK Armament 2 items
  12. JMAC Customs 2 items
  13. Krebs Customs 1 item
  14. Mad Pig 2 items
  15. Precision Armament 1 item
  16. Q, LLC 3 items
  17. Radian Weapons 1 item
  18. V Seven Weapon Systems 1 item
  19. VLTOR 1 item
  20. WMD Guns 2 items
Mount
  1. Picatinny 2 items
Option
  1. AK-47/74 2 items
  2. AR-15 6 items
  3. Non-Adjustable 1 item
Platform
  1. AR-15 2 items
Product Type
  1. AR-10 / LR 308 Charging Handle 1 item
  2. AR-15 Assembled Upper Receiver 1 item
  3. AR-15 Barrel 1 item
  4. AR-15 Charging Handle 2 items
  5. AR-15 Stripped Lower Receiver 1 item
  6. AR-15 Stripped Upper Receiver 2 items
  7. AR-9 Upper Receiver 1 item
  8. Blast Shield 1 item
  9. Charging Handle 1 item
  10. Compensator 3 items
  11. Gas Block 2 items
  12. Muzzle Brake 7 items
  13. Muzzle Device Accessory 2 items
  14. Pistol Grip 1 item
  15. Trigger 2 items
  16. Vertical Grip 2 items
Thread Pitch
  1. 1/2x28 (9mm) 1 item
  2. 1/2x28 (.22 cal) 5 items
  3. 5/8x24 (.30 cal) 3 items
  4. 11/16x24 1 item
  5. M14x1 LH 1 item
  6. M24x1.5 RH 1 item
Threaded
  1. Yes 3 items
Twist Rate
  1. 1:10 1 item
Stock Status
  1. Out of stock 31 items Remove This Item
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