Thread: 300Whisper in the AR-15
View Single Post
  #10  
Old 03-13-2010, 12:45 PM
dvanncvann dvanncvann is offline
Member
  
Join Date: Oct 2007
Posts: 40
We opened the gas port up to .120. Carbine port position. If I remember correctly the original port size was .069.
Reply With Quote