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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 $180.00 - $189.99 Remove This Item
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Barrel Length
  1. 10.7" 1 item
  2. 17" 1 item
Caliber
  1. .308 1 item
  2. 9mm 2 items
Category
  1. Receiver Parts 5 items
  2. Barrels 1 item
  3. Buffer Systems 2 items
  4. Trigger Parts 3 items
  5. Gas Systems 4 items
  6. Muzzle Devices 2 items
  7. Rifle Handguards 5 items
  8. Stocks & Braces 1 item
Color
Configuration
  1. AR-10 1 item
  2. Curved 1 item
  3. Straight 1 item
  4. Enhanced Finger Placement (EFP) 1 item
Finish
  1. FDE 1 item
  2. Nitride 1 item
  3. Phosphate 1 item
  4. Anodize 1 item
  5. PVD/CVD 1 item
Gas Block Diameter
  1. .625" 4 items
  2. .750" 4 items
  3. .875" 4 items
  4. .936" 4 items
Gas System Length
  1. Blowback 1 item
Manufacturer
  1. A3 Tactical 1 item
  2. Aero Precision 1 item
  3. Battle Arms Development 1 item
  4. Cross Machine Tool (CMT) 1 item
  5. Fortis MFG 1 item
  6. JP Enterprises Inc 2 items
  7. Magpul Industries 1 item
  8. Midwest Industries 3 items
  9. Patriot Ordnance Factory (POF) 2 items
  10. Precision Armament 2 items
  11. Rainier Arms, LLC 1 item
  12. Sharps Bros 2 items
  13. Strike Industries 1 item
  14. Superlative Arms 4 items
Model
  1. CZ Scorpion 1 item
  2. Sig MPX 1 item
Mount
  1. M-LOK 4 items
Option
  1. AR-10 1 item
  2. AR-15 4 items
  3. CZ 1 item
  4. Sig Sauer 1 item
  5. Adjustable 4 items
Platform
  1. AR-10/LR308 1 item
  2. AR-15 2 items
  3. CZ 1 item
  4. Sig Sauer 1 item
Product Type
  1. AR-10 Stripped Upper Receiver 1 item
  2. AR-15 Barrel 1 item
  3. AR-15 Handguard 1 item
  4. AR-15 Stripped Lower Receiver 2 items
  5. AR-15 Stripped Upper Receiver 1 item
  6. Buffer Spring 2 items
  7. Gas Block 4 items
  8. Handguard 4 items
  9. Lower Receiver 1 item
  10. Muzzle Brake 2 items
  11. Stock 1 item
  12. Trigger 3 items
Rail Length
  1. 4.5" 1 item
  2. 6.25" 1 item
  3. 6.5" 1 item
  4. 7" 1 item
  5. 8" 1 item
  6. 9" 1 item
  7. 10" 1 item
  8. 10.5" 1 item
  9. 11.5" 1 item
  10. 12.5" 2 items
  11. 14" 1 item
  12. 15" 1 item
  13. 17" 1 item
Thread Pitch
  1. 1/2x28 (9mm) 1 item
Twist Rate
  1. 1:10 1 item
Stock Status
  1. In stock 22 items Remove This Item
  2. Out of stock 1 item
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