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raineirarms

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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Items 49-54 of 54

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  1. Battle Arms Development Complete Enhanced Lower Parts Kit
    Battle Arms Development Complete Enhanced Lower Parts Kit
    $125.00
    Out of stock
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  2. F5 MFG CZ Scorpion ACR Stock Adapter
    F5 MFG CZ Scorpion ACR Stock Adapter
    $125.00
    Out of stock
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  3. Silencerco ASR Blast Shield
    Silencerco ASR Blast Shield
    $126.65
    Out of stock
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  6. JMAC Customs ST-7 Skeletonized Tube 7"
    JMAC Customs ST-7 Skeletonized Tube 7"
    $121.46
    Out of stock
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Items 49-54 of 54

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  1. Price $120.00 - $129.99 Remove This Item
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Barrel Length
  1. 10.3" 1 item
  2. 10.5" 1 item
  3. 18" 3 items
Caliber
  1. .223/5.56 1 item
  2. .223 Wylde 1 item
  3. .30 Cal 1 item
  4. .308 1 item
  5. .45 ACP 1 item
  6. 12 Gauge 1 item
  7. 5.56 NATO 5 items
  8. 5.56mm 1 item
  9. 7.62mm 2 items
  10. 7.62x39 1 item
  11. 9mm 2 items
Category
  1. Receiver Parts 9 items
  2. Parts & Kits 3 items
  3. Barrels 2 items
  4. Buffer Systems 5 items
  5. Trigger Parts 4 items
  6. Muzzle Devices 16 items
  7. Bolt Parts 3 items
  8. Grips 1 item
  9. Charging Handles 5 items
  10. Rifle Handguards 1 item
  11. Stocks & Braces 4 items
Color
Configuration
  1. AR-15 3 items
  2. Carbine 1 item
  3. Curved 2 items
  4. Flat 2 items
  5. Straight 1 item
Finish
  1. Black 1 item
  2. Nitride 2 items
  3. Phosphate 1 item
  4. Anodize 2 items
Gas Block Diameter
  1. .750" 1 item
Gas System Length
  1. Blowback 1 item
  2. Carbine 1 item
  3. Intermediate 3 items
Is Firearms?
  1. No 54 items
Manufacturer
  1. Airborne Arms 2 items
  2. B5 Systems 1 item
  3. Ballistic Advantage 1 item
  4. Battle Arms Development 2 items
  5. Bravo Company MFG (BCM) 1 item
  6. Centurion Arms 1 item
  7. Dead Air Armament 1 item
  8. Devil Dog Concepts 1 item
  9. DPM Systems Technologies 1 item
  10. F5 MFG 2 items
  11. Faxon Firearms 1 item
  12. Griffin Armament 1 item
  13. HERA ARMS 1 item
  14. HUXWRX 1 item
  15. Icon Defense 2 items
  16. JK Armament 1 item
  17. JMAC Customs 2 items
  18. JP Enterprises Inc 1 item
  19. Knight’s Armament Company (KAC) 2 items
  20. Krebs Customs 1 item
  21. KynSHOT 4 items
  22. Lantac 3 items
  23. Next Level Armament 1 item
  24. Noveske 2 items
  25. Primary Weapon Systems 1 item
  26. Radian Weapons 4 items
  27. Rainier Arms, LLC 1 item
  28. SCALARWORKS 1 item
  29. Seekins Precision 1 item
  30. Sharps Bros 4 items
  31. Silencerco 1 item
  32. Sons of Liberty Gun Works 1 item
  33. Spinta Precision 1 item
  34. Stern Defense 1 item
  35. Triggertech 2 items
Mount
  1. M-LOK 1 item
  2. Picatinny 3 items
Option
  1. AR-15 13 items
  2. Front 1 item
  3. Mid 1 item
  4. Rear 1 item
  5. Sharps Bros 1 item
Platform
  1. AR-15 6 items
Product Type
  1. AR-15 Barrel 2 items
  2. AR-15 Charging Handle 5 items
  3. AR-15 Handguard 1 item
  4. AR-15 Stripped Lower Receiver 5 items
  5. AR-15 Stripped Upper Receiver 3 items
  6. Bolt 1 item
  7. Bolt Carrier Group 2 items
  8. Buffer 5 items
  9. Charging Handle 1 item
  10. Compensator 1 item
  11. Flash Hider 8 items
  12. Iron Sight 1 item
  13. Lower Parts Kit 2 items
  14. Muzzle Brake 7 items
  15. Muzzle Device Accessory 1 item
  16. Parts Kit 1 item
  17. Stock 1 item
  18. Stock Accessory 1 item
  19. Stock Adapter 2 items
  20. Trigger 4 items
Rail Length
  1. 7" 1 item
  2. 12" 3 items
Size
  1. 9 Slot 1 item
Thread Pitch
  1. 1/2x28 (9mm) 2 items
  2. 1/2x28 (.22 cal) 13 items
  3. 5/8x24 (.30 cal) 4 items
  4. M14x1 LH 2 items
Threaded
  1. Yes 2 items
Twist Rate
  1. 1:8 1 item
  2. 1:10 1 item
Stock Status
  1. In stock 32 items
  2. Out of stock 22 items
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