01-27-2023, 06:47 PM
montana Wrote:I had to open up the gas port on a 20" 5.56 rifle length Faxon barrel. I called Faxon and they gave me permission to proceed before I sent it back..They were great to work with. I have the correct chucking reamers-drill bits and pin gauges to do it properly.. If you try this, place a steel cleaning rod in the bore before you drill so you won't hit the side of the bore opposite the gas port.. I gradually opened the gas port, while test firing after each increase to get the proper port size..If all things were equal, a standard size gas port would work..Most rifles and ammunition are not equal..Drilling the gas port is the last option I will use..If you over size the gas port, you will have to adjust the gas some where a long the process, adj gas block, adj bolt carrier, adj gas tube, install a new gas tube with a smaller port, etc..
Awesome. So it can be done. Thanks for the info.
R.