Works great. does it’s job - Kaw Valley Precision AR-15 Gas Block Dimpling Jig

This tool works exactly like it is supposed to. All I can say is measure your space between your holes and make sure they are what you need. I drilled 2 holes on one barrel for a gas block with 2 set screws. I then bore scoped it to make sure my gas ports lined up correctly and they were perfect. I also had to dimple a barrel where I had to install an adjustable gas block with 3 set screws. This jig only lets you do has blocks with 2 screws. That being said you really only need to drill out that first hole directly under the gas port for any gas block to work. That way it will stay where you need it. You do need to go out and buy a 5/32 drill bit because this jig does not come with one (cost me $9). I recommend a carbide drill bit to make sure it cuts the metal on your barrel. Also the holes to guide the drill bit are a little tight.