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Maxim Defense

Firearms, parts, accessories

Maxim Defense Industries is a defense development company that develops and manufactures firearms, firearm parts, and accessories.

At Rainier Arms, you can find the Maxim Defense MDX line, Buffer & Springs, or explore the offer even further.

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  1. Maxim Defense MDX 505 PDX 300BLK Pistol - 5.5" Urban Grey
    Maxim Defense MDX 505 PDX 300BLK Pistol - 5.5" Urban Grey
    $2,245.50
    Out of stock
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  2. Maxim Defense MDX 505 PDX SCW PDW Brace 5.56 NATO Pistol - 5.5" FDE
    Maxim Defense MDX 505 PDX SCW PDW Brace 5.56 NATO Pistol - 5.5" FDE
    $2,245.50
    Out of stock
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  3. Maxim Defense MDX 505 PDX SCW PDW Brace 5.56 NATO Pistol - 5.5" Black
    Maxim Defense MDX 505 PDX SCW PDW Brace 5.56 NATO Pistol - 5.5" Black
    $2,245.50
    Out of stock
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  4. Maxim Defense MDX 505 PDX 5.56 NATO SBR - 5.5" FDE
    Maxim Defense MDX 505 PDX 5.56 NATO SBR - 5.5" FDE
    $2,245.50
    Out of stock
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  5. Maxim Defense MDX 505 PDX SBR - 5.5" Black
    Maxim Defense MDX 505 PDX SBR - 5.5" Black
    Out of stock
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  6. Maxim Defense SCW Pistol Brace - STD 3.3 oz Black
    Maxim Defense SCW Pistol Brace - STD 3.3 oz Black
    $494.96
    Out of stock
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  7. Maxim Defense DRF:22 Rimfire Suppressor
    Maxim Defense DRF:22 Rimfire Suppressor
    $359.99
    Out of stock
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  8. Maxim Defense Ruger MKIV-SD .22lr Integral Suppressed Pistol
    Maxim Defense Ruger MKIV-SD .22lr Integral Suppressed Pistol
    $1,165.50
    Out of stock
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  9. Maxim Defense MDX 508 5.56 Mil-Spec Complete Upper - 8.5"
    Maxim Defense MDX 508 5.56 Mil-Spec Complete Upper - 8.5"
    Out of stock
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  10. Maxim Defense MDX 505 PDX 300BLK Mil-Spec Complete Upper - 5.5" Urban Grey
    Maxim Defense MDX 505 PDX 300BLK Mil-Spec Complete Upper - 5.5" Urban Grey
    $1,165.50
    Out of stock
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  11. Maxim Defense MDX 505 PDX 7.62x39 Mil-Spec Complete Upper - 5.5" Urban Grey
    Maxim Defense MDX 505 PDX 7.62x39 Mil-Spec Complete Upper - 5.5" Urban Grey
    $1,165.50
    Out of stock
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  12. Maxim Defense MDX 505 PDX 5.56 NATO Mil-Spec Complete Upper - 5.5" Urban Grey
    Maxim Defense MDX 505 PDX 5.56 NATO Mil-Spec Complete Upper - 5.5" Urban Grey
    $1,165.50
    Out of stock
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  13. Maxim Defense MDX 505 PDX 5.56 NATO SBR - 5.5" Urban Grey
    Maxim Defense MDX 505 PDX 5.56 NATO SBR - 5.5" Urban Grey
    $2,245.50
    Out of stock
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  14. Maxim Defense 1913 Picatinny Rail Mount Brace - Black
    Maxim Defense 1913 Picatinny Rail Mount Brace - Black
    $314.96
    Out of stock
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  15. Maxim Defense CQB Roller Delay Buffer System
    Maxim Defense CQB Roller Delay Buffer System
    $170.96
    Out of stock
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  16. Maxim Defense CCS Brace Gen6 For AR-15
    Maxim Defense CCS Brace Gen6 For AR-15
    Out of stock
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Items 33-48 of 48

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Shop By
Shopping Options
Barrel Length
  1. 5.5" 11 items
  2. 8.5" 4 items
  3. 10.3" 12 items
Caliber
  1. .22 LR 2 items
  2. .223/5.56 1 item
  3. 300 Blackout 10 items
  4. 5.56 NATO 16 items
  5. 5.56mm 2 items
  6. 7.62mm 2 items
  7. 7.62x39 6 items
Color
Configuration
  1. AR Pistol Caliber 1 item
  2. Mil-Spec 1 item
  3. Standard Buffer and Spring 1 item
  4. Silent Captured Spring 9mm 1 item
Finish
  1. Arid 2 items
  2. Anodize 1 item
Gas System Length
  1. Carbine 1 item
Is Firearms?
  1. Yes 11 items
  2. No 37 items
Manufacturer
Mount
  1. M-LOK 8 items
  2. Picatinny 2 items
Option
  1. AR-10 1 item
  2. AR-15 4 items
  3. 4.720" 2 items
  4. 6.295" 2 items
  5. 7.870" 2 items
  6. 9.445" 2 items
  7. JP Silent Captured Spring - Standard 1 item
  8. JP Silent Captured Spring - Heavy 1 item
  9. JP Silent Captured Spring - 9mm 1 item
  10. Buffer & Spring - Standard 3 items
  11. Buffer & Spring - 9mm 2 items
  12. Buffer & Spring - H1 3 items
  13. Buffer & Spring - H2 2 items
  14. Buffer & Spring - H3 2 items
Platform
  1. AR-9 1 item
  2. AR-10/LR308 1 item
  3. AR-15 7 items
Price
  1. $0.00 - $999.99 18 items
  2. $1,000.00 - $1,999.99 16 items
  3. $2,000.00 and above 14 items
Product Type
  1. AR Pistol 7 items
  2. AR-10 Complete Upper Receiver 1 item
  3. AR-15 Complete Upper Receiver 10 items
  4. Brace 3 items
  5. Buffer 1 item
  6. Complete Upper 7 items
  7. Handgun 1 item
  8. Muzzle Device Accessory 2 items
  9. Rail Adapter 2 items
  10. Short-Barrel Rifle 3 items
  11. Stock 6 items
  12. Suppressor 4 items
Rail Length
  1. 8.5" 1 item
  2. 9.5" 2 items
Thread Pitch
  1. 1/2x28 5 items
  2. 1/2x36 2 items
  3. 5/8x24 5 items
Threaded
  1. Yes 1 item
Stock Status
  1. In stock 32 items
  2. Out of stock 16 items
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