Knight's Armament 556 QDC 14mm Airsoft Barrel Extension by Madbull

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Model: CQB
Color: Black
$99.95 $114.95
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The Knight's Armament QDC Airsoft Barrel Extension is the latest addition to Madbull's line of high quality airsoft mock suppressors and barrel extensions. Licensed by Knight's Armament Company, these replica suppressors are constructed out of high strength steel for maximum durability and realism. The Knight's QDC features a unique quick release mechanism that is accurately replicated from its real counter part. Using a set of ball bearings, the mock suppressor can be easily attached or detached with ease. It features a movable collar and custom, three-prong flash hider to securely lock the suppressor in place.


  • High strength steel construction
  • Officially licensed by Knight's Armament Company
  • Authentic Knight's Armament logos and trademarks
  • Variants:
    • Knight's Armament 556 QDC CQB
      • Length: 4.9" / 125 mm
    • Knight's Armament 556 QDC Full Size
      • Length: 6.69" / 169.92 mm
  • Diameter: 1.37" / 35 mm
  • Weight: 13.20 oz / 374.21 g
  • Threading: 14mm Counter Clock-Wise
  • Licensed Knight's Armament 3-prong steel flash hider included
  • Realistic anodized matte finish
  • Features Knight's Armament's unique dimple texture / patterning
  • Quick disconnect couplings for barrel extension
  • Multiple ball bearings provide a solid, yet quick release, attachment system
  • Simple twist mechanism for attach or detach
  • Flash hider has 14mm CCW threading, compatible with most airsoft outer barrels
  • Barrel extension is a solid one-piece design
  • Provides a unique and aggressive profile for any airsoft replica

Package Includes:

  • Knight's Armament 556 QDC Airsoft Barrel Extension
  • Knight's Armament 3-Prong Airsoft Flash Hider

**NOTE** Airsoft rifle and other accessories are NOT included.


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