02-07-2016, 02:29 AM
If your friend has a drill index find a bit that fits your gas port. On a 20" it should be a 3/32.
If it's not drill it out with the 3/32. A 1/4" dowel in the barrel will protect the bore
Richard
If it's not drill it out with the 3/32. A 1/4" dowel in the barrel will protect the bore
Richard
Member since 2011, data lost in last hack attack