The Modify Air Seal Nozzle for ASC or Mk16 fits the Echo1 ASC Light, and should fit Classic Army Mk16 AEGs. The o-ring seal provides increased efficiency in any M16 style airsoft rifle.
This air nozzle replaces a leaky or inefficient original air nozzle on any airsoft ASC or Mk16. This part works best when paired with a Systema cylinder head for best performance. Replacing a leaky air nozzle can improve performance by 20-50fps.
Note: This is a standard size air nozzle, not a 'bore-up'.