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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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  4. Aero Precision AR15 BREACH Ambi Charging Handle w/ Small Lever
    Aero Precision AR15 BREACH Ambi Charging Handle w/ Small Lever
    $84.99
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  6. Fortis MFG TORQUE 25° Standard Pistol Grip
    Fortis MFG TORQUE 25° Standard Pistol Grip
    $85.45
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  7. Fortis MFG TORQUE 15° Standard Pistol Grip
    Fortis MFG TORQUE 15° Standard Pistol Grip
    $85.45
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  16. VLTOR IMOD MilSpec Standard Stock
    VLTOR IMOD MilSpec Standard Stock
    $89.06
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Barrel Length
  1. 7" 1 item
Caliber
  1. .22 Cal 1 item
  2. .223/5.56 1 item
  3. .30 Cal 2 items
  4. 5.56 NATO 3 items
  5. 5.56mm 1 item
  6. 9mm 3 items
Category
  1. Receiver Parts 1 item
  2. Parts & Kits 12 items
  3. Trigger Parts 1 item
  4. Gas Systems 7 items
  5. Muzzle Devices 24 items
  6. Grips 9 items
  7. Charging Handles 6 items
  8. Stocks & Braces 7 items
Color
Configuration
  1. 90 Degree 1 item
  2. AR-10 1 item
  3. AR-15 1 item
  4. .625 DIA 1 item
  5. .800 DIA 1 item
  6. .936 DIA 1 item
Finish
  1. Black 2 items
  2. Melonite 1 item
  3. Anodize 4 items
Gas Block Diameter
  1. .625" 4 items
  2. .750" 5 items
  3. .875" 4 items
  4. .936" 4 items
Gas Length
  1. Pistol 1 item
Is Firearms?
  1. No 67 items
Manufacturer
  1. A3 Tactical 4 items
  2. Aero Precision 1 item
  3. ALG Defense 1 item
  4. Arms Republic 1 item
  5. Brügger & Thomet (B&T) 1 item
  6. Bravo Company MFG (BCM) 4 items
  7. Daniel Defense 1 item
  8. Dead Air Armament 5 items
  9. Fortis MFG 3 items
  10. Forward Controls Design 8 items
  11. Geissele 1 item
  12. Grey Ghost Precision 1 item
  13. Griffin Armament 5 items
  14. JK Armament 3 items
  15. JL Billet 1 item
  16. JMAC Customs 3 items
  17. Magpul Industries 2 items
  18. NEMO Arms 1 item
  19. Noveske 1 item
  20. Precision Armament 2 items
  21. Primary Weapon Systems 1 item
  22. Q, LLC 1 item
  23. Rainier Arms, LLC 3 items
  24. Rainier Industries 1 item
  25. Superlative Arms 5 items
  26. TruCalibre 1 item
  27. Tyrant Designs 1 item
  28. V Seven Weapon Systems 1 item
  29. VLTOR 1 item
  30. WMD Guns 2 items
Mount
  1. M-LOK 6 items
  2. Picatinny 1 item
Option
  1. AR-10 2 items
  2. AR-15 6 items
  3. CZ 1 item
  4. Heckler & Koch 1 item
  5. Small Lever 1 item
  6. Adjustable 5 items
Platform
  1. AR-10 1 item
  2. AR-15 4 items
  3. H&K 1 item
Product Type
  1. Angled Grip 1 item
  2. AR-10 / LR 308 Charging Handle 1 item
  3. AR-15 Charging Handle 3 items
  4. AR-15 Stripped Lower Receiver 1 item
  5. Blast Shield 1 item
  6. Charging Handle 3 items
  7. Compensator 8 items
  8. End Cap 3 items
  9. Flash Hider 5 items
  10. Gas Block 7 items
  11. Lower Parts Kit 2 items
  12. Magazine Release 1 item
  13. Muzzle Brake 9 items
  14. Muzzle Device Accessory 1 item
  15. Pistol Grip 4 items
  16. Safety Selector 6 items
  17. Stock 4 items
  18. Stock Adapter 3 items
  19. Trigger 1 item
  20. Vertical Grip 5 items
Rail Length
  1. 12.6" 1 item
Size
  1. Medium 1 item
  2. Large 1 item
  3. 5 Slot 1 item
Thread Pitch
  1. 1/2x28 14 items
  2. 5/8x24 6 items
  3. M13.5x1 LH 1 item
Threaded
  1. Yes 7 items
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  1. In stock 67 items Remove This Item
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