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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 $90.00 - $99.99 Remove This Item
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Barrel Length
  1. 5.5" 1 item
  2. 7.25" 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 2 items
Category
  1. Receiver Parts 4 items
  2. Parts & Kits 1 item
  3. Barrels 2 items
  4. Trigger Parts 2 items
  5. Gas Systems 2 items
  6. Muzzle Devices 15 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 1 item
  4. Anodize 4 items
Gas Block Diameter
  1. .750" 1 item
Gas System Length
  1. Blowback 2 items
Manufacturer
  1. A3 Tactical 2 items
  2. Advanced Armament Company (AAC) 1 item
  3. Aeroknox 2 items
  4. Angstadt Arms 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 2 items
  10. Hiperfire 2 items
  11. JK Armament 2 items
  12. JMAC Customs 1 item
  13. Krebs Customs 1 item
  14. Mad Pig 2 items
  15. Precision Armament 1 item
  16. Q, LLC 4 items
  17. R&D Precision 1 item
  18. Radian Weapons 1 item
  19. V Seven Weapon Systems 1 item
  20. VLTOR 1 item
  21. 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 3 items
Product Type
  1. AR-10 / LR 308 Charging Handle 1 item
  2. AR-15 Assembled Upper Receiver 1 item
  3. AR-15 Barrel 2 items
  4. AR-15 Charging Handle 2 items
  5. AR-15 Stripped Lower Receiver 1 item
  6. AR-15 Stripped Upper Receiver 2 items
  7. Blast Shield 1 item
  8. Charging Handle 1 item
  9. Compensator 4 items
  10. Gas Block 2 items
  11. Muzzle Brake 8 items
  12. Muzzle Device Accessory 2 items
  13. Pistol Grip 1 item
  14. Trigger 2 items
  15. Vertical Grip 2 items
Thread Pitch
  1. 1/2x28 (9mm) 2 items
  2. 1/2x28 (.22 cal) 6 items
  3. 5/8x24 (.30 cal) 4 items
  4. 11/16x24 1 item
  5. M18x1.5 1 item
  6. M24x1.5 RH 1 item
Threaded
  1. Yes 3 items
Twist Rate
  1. 1:10 2 items
Stock Status
  1. Out of stock 33 items Remove This Item
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