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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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Items 81-96 of 108

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  1. Fortis MFG Contractor Series Billet Magazine Catch
    Fortis MFG Contractor Series Billet Magazine Catch
    $18.95
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  2. Bravo Company MFG (BCM) GUNFIGHTER Vertical Grip Short Mod 3-Picatinny
    Bravo Company MFG (BCM) GUNFIGHTER Vertical Grip Short Mod 3-Picatinny
    $19.95
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  3. Bravo Company MFG (BCM) GUNFIGHTER KAG - 1913 Picatinny
    Bravo Company MFG (BCM) GUNFIGHTER KAG - 1913 Picatinny
    $19.95
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  4. Bravo Company MFG (BCM) GUNFIGHTER Vertical Grip - (M-LOK Compatible) - Mod 3
    Bravo Company MFG (BCM) GUNFIGHTER Vertical Grip - (M-LOK Compatible) - Mod 3
    $18.95
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  5. Magpul MIAD/MOE Bolt & Firing Pin Core
    Magpul MIAD/MOE Bolt & Firing Pin Core
    $11.92 - $15.15
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  6. Magpul MIAD/MOE CR123A Battery Storage Core
    Magpul MIAD/MOE CR123A Battery Storage Core
    $11.92
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Items 81-96 of 108

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Barrel Length
  1. 18" 2 items
Caliber
  1. .223/5.56 1 item
Category
  1. Parts & Kits 28 items
  2. Buffer Systems 5 items
  3. Trigger Parts 8 items
  4. Gas Systems 5 items
  5. Muzzle Devices 1 item
  6. Bolt Parts 1 item
  7. Grips 29 items
  8. Charging Handles 1 item
  9. Rifle Handguards 9 items
  10. Stocks & Braces 12 items
  11. MILSPEC Parts 4 items
Color
Configuration
  1. AR-15 2 items
  2. M-LOK 1 item
  3. Rifle 1 item
Finish
  1. Black 3 items
  2. FDE 2 items
  3. NiB-X 1 item
  4. Nitride 1 item
  5. Nitromet 2 items
Gas Block Diameter
  1. .750" 1 item
Gas System Length
  1. Pistol -1 2 items
  2. Pistol 3 items
  3. Carbine 4 items
  4. Micro 1 item
  5. Mid 3 items
  6. Intermediate 5 items
  7. Patrol 1 item
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  9. Rifle +1 2 items
  10. Rifle +2 2 items
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  1. Low 1 item
  2. Medium 1 item
  3. High 1 item
Magazine Capacity
  1. 32rd 1 item
Manufacturer
  1. A3 Tactical 1 item
  2. Advanced Armament Company (AAC) 1 item
  3. ALG Defense 1 item
  4. Andro Corp Industries 1 item
  5. Armaspec 1 item
  6. Arms Republic 1 item
  7. B5 Systems 4 items
  8. Battle Arms Development 2 items
  9. Blitzkrieg Components 4 items
  10. Bravo Company MFG (BCM) 8 items
  11. Brigand Arms 1 item
  12. Chisel Machining 1 item
  13. Flatline Fiber Co 1 item
  14. Fortis MFG 2 items
  15. Forward Controls Design 4 items
  16. Gear Head Works 1 item
  17. HB Industries 1 item
  18. HERA ARMS 4 items
  19. JP Enterprises Inc 2 items
  20. KNS Precision 2 items
  21. Krebs Customs 1 item
  22. Leitner-Wise 1 item
  23. Magpul Industries 21 items
  24. Mission First Tactical 1 item
  25. NEMO Arms 1 item
  26. Neverwear Springs 1 item
  27. Noveske 1 item
  28. Patriot Ordnance Factory (POF) 1 item
  29. Rainier Arms, LLC 3 items
  30. Rainier Industries 1 item
  31. Reptilia Corp 3 items
  32. Riflespeed 1 item
  33. Rise Armament 1 item
  34. Seekins Precision 2 items
  35. Sprinco (Tactical Springs) 2 items
  36. Strike Industries 13 items
  37. Tango Down 1 item
  38. Taran Tactical Innovations 1 item
  39. Underground Tactical 1 item
  40. V Seven Weapon Systems 1 item
  41. WMD Guns 3 items
Model
  1. CZ Scorpion 1 item
Mount
  1. M-LOK 6 items
  2. Other 1 item
  3. Picatinny 9 items
Option
  1. AR-10 2 items
  2. AR-15 4 items
  3. White - Standard Power 1 item
  4. Blue - Enhanced Power 1 item
  5. Red - Extra Power 1 item
  6. Yellow - Reduced Power 1 item
  7. White/Red - Intermediate Power 1 item
  8. Green - Rifle Length Standard Power 1 item
  9. CZ 1 item
  10. Non-Adjustable 1 item
  11. Dimpled 2 items
  12. Serrated 2 items
Platform
  1. AR-15 3 items
  2. AK47/74 3 items
  3. CZ-USA 1 item
Product Type
  1. Accessory 1 item
  2. Angled Grip 4 items
  3. Anti Walk Pins 2 items
  4. Bolt Catch 2 items
  5. Brace Strap 1 item
  6. Buffer 4 items
  7. Buffer Spring 2 items
  8. Cam Pin 1 item
  9. Castle Nut 1 item
  10. Charging Handle 1 item
  11. Cheek Riser 3 items
  12. Dust Cover 4 items
  13. End Plate 4 items
  14. Forearm Accesory 4 items
  15. Forward Assist 2 items
  16. Gas Block 1 item
  17. Gas Tube 4 items
  18. Grip Accessory 5 items
  19. Grip Screw 1 item
  20. Handstop 1 item
  21. Magazine 1 item
  22. Magazine Catch 1 item
  23. Magazine Release 3 items
  24. Parts Kit 1 item
  25. Pistol Grip 12 items
  26. Port Door 1 item
  27. Rail Panel 6 items
  28. Rail Section 1 item
  29. Recoil Spring 1 item
  30. Retainer Pin 3 items
  31. Safety Selector 2 items
  32. Shim Set 1 item
  33. Sight Post 4 items
  34. Spring 4 items
  35. Stock 1 item
  36. Stock Accessory 6 items
  37. Stock Adapter 1 item
  38. Take Down / Pivot Pins 1 item
  39. Trigger / Hammer Pins 2 items
  40. Trigger Guard 3 items
  41. Upper Parts Kit 1 item
  42. Vertical Grip 7 items
Rail Length
  1. 12" 2 items
Size
  1. Medium 1 item
  2. Large 1 item
  3. 3 Slot 1 item
  4. 5 Slot 1 item
  5. 9 Slot 3 items
Thread Pitch
  1. 1/2x28 1 item
  2. 3/4x24 1 item
  3. 5/8x24 1 item
Stock Status
  1. In stock 108 items Remove This Item
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