Hand reamer for gas port

[Califpatriot]

If one wants to expand a gas port by 0.013" from about 0.062 to let's say 0.075 (+/- ~0.03), what reamer/reamer set would one buy? Links as examples welcome and appreciated.

[Califpatriot]

Or would one just oil it up, stick a cleaning rod in the barrel, and run a 5/64 drill bit through it to make it easy?

[-hanko]

This will get you to a Fastenal 0.075" carbide reamer.

Lots of possibilities if you google.

A fresh, good quality 7/64" drill bit will also work. An aluminum rod in the bar is necessary.

[ar15barrels]

If one wants to expand a gas port by 0.013" from about 0.062 to let's say 0.075 (+/- ~0.03), what reamer/reamer set would one buy?

If you use wire gauge drill bits and go one step at a time, you can hold the drill bits with a pin vise or a drill chuck.
You will only be drilling a couple thousandths at a time.
Even better is a drill chuck that's got a drill motor attached to it.

[BrassCase]

I've thought about this before because my concern would be how to deal with the burr created inside?

[heidad01]

If you use wire gauge drill bits and go one step at a time, you can hold the drill bits with a pin vise or a drill chuck.
You will only be drilling a couple thousandths at a time.
Even better is a drill chuck that's got a drill motor attached to it.

This is the easiest.

If you have no access to a drill press with a nice vise on it and some other machine shop basics and have to do it with a hand drill.

[FeuerFrei]

I've thought about this before because my concern would be how to deal with the burr created inside?

When I have had to open up a gas port I never concerned myself with metal burrs. Those are taken care of by the first shot or 2. Very micro in size if any at all. Running a patch thru the barrel will tell the story. Snag or no snag.

[FeuerFrei]

Or would one just oil it up, stick a cleaning rod in the barrel, and run a 5/64 drill bit through it to make it easy?

That'll work, but I use a wooden chop stick. I stop drilling when wood chips are seen.