Barrel Porting / Gas Block Dimple Jig

This jig has it all, 750" gas block journal holes as well as .875" and .936" through holes. Predrill and porting supported holes.

This was originally ment to help the hobbyist but will work for shops too, for fast full rate production runs on a mill.

It has a center point drill bit hole set that's is centered at .293" from the gas block shoulder for a perfect port location to be center drilled into. (Set up for a .400" diameter center point drill bit). Then flip the jig and port the barrel in a supported port hole on the other side that mirrors the intital sides center line.

The center point side can be used to create a perfect dimple for gas block alignment as well.

This will support all gas block sizes and AR-10 or AR-15 barrels. 

This will work well for guys who have to fix a gas port size on an existing barrel that won't cycle. You can vise in the block, leave the barrel secure the in the upper and not worry as much about oblonging the port to the the drill but being perfectly aligned at a 90* angel.

This will work extremely well in a standard drill press and vise also.