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4 Rail Gas Block

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Product Features

This gas block replaces your existing front sight and allows the user to mount accessories to its four picatinny rails. This gas block can be mounted either by drilling and pinning it in place or by the use of set screws (included). Purchase our gas block mounted flip front sight (YHM-9584) to retain your iron sights.


  • Made from high quality steel and finished
  • Mil. Spec. phosphate coating
  • Bore diameter of .750 inches.

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