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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. Centurion Arms C4 Rail System - Carbine Cutout Handguard
    Centurion Arms C4 Rail System - Carbine Cutout Handguard
    $266.00
    Out of stock
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  2. Battle Arms Development Lightweight Billet Upper Receiver
    Battle Arms Development Lightweight Billet Upper Receiver
    $239.00
    Out of stock
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  3. Hiperfire HIPERTOUCH ECLipse, AR15/10 Trigger Assembly
    Hiperfire HIPERTOUCH ECLipse, AR15/10 Trigger Assembly
    $261.25
    Out of stock
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  4. Rainier Arms AR-15 M-LOK SWITCH .223/5.56 Rail
    Rainier Arms AR-15 M-LOK SWITCH .223/5.56 Rail
    Out of stock
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  5. V Seven Weapon Systems 7075 Billet Enlightened AR15 Upper
    V Seven Weapon Systems 7075 Billet Enlightened AR15 Upper
    $287.12
    Out of stock
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  6. Aero Precision M5 (.308/7.62) Stripped Lower Receiver - Black
    Aero Precision M5 (.308/7.62) Stripped Lower Receiver - Black
    $209.99
    Out of stock
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  7. Ballistic Advantage Modern Series .308 Rifle Barrel-20
    Ballistic Advantage Modern Series .308 Rifle Barrel-20
    $237.50
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  8. Geissele Super Semi-Automatic (SSA®) Trigger
    Geissele Super Semi-Automatic (SSA®) Trigger
    $245.00
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  9. Geissele Super 3 Gun (S3G) Trigger
    Geissele Super 3 Gun (S3G) Trigger
    $245.00
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  10. Geissele Super Semi-Automatic Enhanced (SSA-E) Trigger
    Geissele Super Semi-Automatic Enhanced (SSA-E) Trigger
    $245.00
    Out of stock
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  11. Geissele Super Dynamic Combat (SD-C) Trigger
    Geissele Super Dynamic Combat (SD-C) Trigger
    $245.00
    Out of stock
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  12. Young Mfg National Match LITE Bolt Carrier Group
    Young Mfg National Match LITE Bolt Carrier Group
    $265.00
    Out of stock
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  13. Young Mfg National Match Bolt Carrier Group w/Side Charger
    Young Mfg National Match Bolt Carrier Group w/Side Charger
    $210.00
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  14. NorthTech Defense AR15 Billet Upper Receiver
    NorthTech Defense AR15 Billet Upper Receiver
    $237.45
    Out of stock
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  15. Hiperfire HIPERTOUCH Competition, AR15/10 Trigger Assembly
    Hiperfire HIPERTOUCH Competition, AR15/10 Trigger Assembly
    $237.50
    Out of stock
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  16. Geissele Super Dynamic Enhanced (SD-E) Trigger
    Geissele Super Dynamic Enhanced (SD-E) Trigger
    $245.00
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Items 65-80 of 123

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Barrel Length
  1. 3.66" 1 item
  2. 11.5" 1 item
  3. 12.5" 1 item
  4. 14.5" 1 item
  5. 16" 11 items
  6. 18" 5 items
  7. 20" 3 items
Caliber
  1. .223/5.56 1 item
  2. .223 Wylde 1 item
  3. .30-30 1 item
  4. .308 1 item
  5. .308 Win 2 items
  6. .458 Socom 1 item
  7. 5.56 NATO 2 items
  8. 6mm ARC 2 items
  9. 6.5 Grendel 1 item
  10. 7.62mm 1 item
  11. 9mm 1 item
Category
  1. Receiver Parts 28 items
  2. Rifle Barrels 19 items
  3. Trigger Parts 21 items
  4. Muzzle Devices 1 item
  5. Bolt Parts 12 items
  6. Charging Handles 1 item
  7. Rifle Handguards 21 items
  8. Stocks & Braces 20 items
Co Witness
  1. Lower 1/3 1 item
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  2. Curved 4 items
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Gas Block Diameter
  1. .750" 6 items
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  2. Mid 10 items
  3. Intermediate 1 item
  4. Rifle 6 items
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  2. 1.55" 1 item
Is Firearms?
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  3. Agency Arms 1 item
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  8. Blackout Defense 5 items
  9. Bravo Company MFG (BCM) 3 items
  10. Centurion Arms 3 items
  11. F5 MFG 11 items
  12. Faxon Firearms 15 items
  13. Fortis MFG 1 item
  14. Forward Controls Design 3 items
  15. Geissele 8 items
  16. Griffin Armament 1 item
  17. HB Industries 1 item
  18. Hiperfire 3 items
  19. JMAC Customs 1 item
  20. Knight’s Armament Company (KAC) 4 items
  21. Lantac 2 items
  22. Law Tactical 1 item
  23. Lee Sporting 3 items
  24. Lewis Machine & Tool (LMT) 1 item
  25. Midwest Industries 4 items
  26. Noveske 1 item
  27. Primary Weapon Systems 1 item
  28. Rainier Arms, LLC 7 items
  29. SB Tactical 1 item
  30. Sharps Bros 1 item
  31. Silencerco 1 item
  32. SLR Rifleworks 1 item
  33. Timney Triggers 1 item
  34. Triggertech 3 items
  35. Troy Industries 3 items
  36. V Seven Weapon Systems 1 item
  37. VLTOR 2 items
Model
  1. CZ Bren 1 item
  2. CZ Scorpion 2 items
  3. H&K G36 1 item
  4. Remington 700 1 item
  5. Sig MCX 1 item
Mount
  1. KeyMod 1 item
  2. M-LOK 7 items
  3. Picatinny 6 items
Option
  1. AR-10 6 items
  2. AR-15 25 items
  3. WA 1 item
  4. KS 1 item
  5. CZ 2 items
  6. Glock 1 item
  7. AKM 1 item
  8. Dimpled 1 item
Platform
  1. AR-10 1 item
  2. AR-15 4 items
  3. AK47/74 3 items
  4. CZ-USA 2 items
  5. Remington 1 item
  6. Sig Sauer 1 item
Price
  1. $200.00 - $209.99 15 items
  2. $210.00 - $219.99 13 items
  3. $220.00 - $229.99 8 items
  4. $230.00 - $239.99 19 items
  5. $240.00 - $249.99 15 items
  6. $250.00 - $259.99 11 items
  7. $260.00 - $269.99 12 items
  8. $270.00 - $279.99 8 items
  9. $280.00 - $289.99 6 items
  10. $290.00 and above 16 items
Product Type
  1. AR-10 Handguard 1 item
  2. AR-10 Stripped Lower Receiver 2 items
  3. AR-10 Stripped Upper Receiver 2 items
  4. AR-15 Complete Lower Receiver 4 items
  5. AR-15 Handguard 10 items
  6. AR-15 Receiver Set 1 item
  7. AR-15 Stripped Lower Receiver 3 items
  8. AR-15 Stripped Upper Receiver 8 items
  9. AR-9 Lower Receiver 2 items
  10. AR-9 Upper Receiver 1 item
  11. Barrel 19 items
  12. Bolt Carrier Group 9 items
  13. Brace 2 items
  14. Charging Handle 1 item
  15. Handguard 9 items
  16. Handgun 1 item
  17. Lower Receiver 3 items
  18. Muzzle Brake 1 item
  19. Rail Adapter 1 item
  20. Scope Mount 1 item
  21. Stock 16 items
  22. Stock Accessory 1 item
  23. Trigger 21 items
Rail Length
  1. 7" 1 item
  2. 9" 1 item
  3. 9.6" 1 item
  4. 10" 2 items
  5. 10.75" 1 item
  6. 12" 3 items
  7. 12.5" 1 item
  8. 13" 1 item
  9. 13.5" 1 item
  10. 13.7" 1 item
  11. 14" 1 item
  12. 15" 6 items
Size
  1. 9 Slot 2 items
Thread Pitch
  1. 1/2x28 2 items
  2. 5/8x24 5 items
Twist Rate
  1. 1:7 2 items
Stock Status
  1. Out of stock 123 items Remove This Item
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