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Knight's Armament URX 3.1 13.5" Aluminum Airsoft M4 Rail System

SKU: ZSI-KAA-URX31-14 Knight's ArmamentOut of stock

  • - CNC-machined aluminum construction
  • - 28 inches of combined rail space
  • - Built-in QD ports for slings
  • - Free-float installation for zero wobble
  • - Compatible w/ most metal gearbox M4 AEGs


In the Box

13.5-inch rail system

mounting screws


Construction CNC Aluminum
Weight 13.4 oz
Length 13.5" in.
Compatibility Most metal M4/M16 AEGs

California Proposition 65 Warning: Cancer and Reproductive Harm -

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