Gas block alignment - Kaw Valley Precision AR-15 Gas Block Dimpling Jig

I rarely, if ever, get my gas block aligned correctly without a dimpled barrel. Since only half my barrels came that way I’ve found this cheap, simple product to be invaluable when it comes to setting a gas block fast and accurately. Only gave it 4 stars because it doesn’t have 4.75 spacing which is common. If you run into this (Aero) just use the hole directly under the gas port screw with any spacing and don’t drill the second hole. Most dimpled barrels come like this from the manufacturer anyway. Works best if you use a drill press and clamp but not necessary.