Almost 5 starts. cheaper that brt tubes - Yankee Hill Machine Suppressor Gas Block, .750 Diameter, Phosphate Finish, Black

The suppressor model comes with a tapered hole around .055. I opened mine up to .070. I’ve got a couple BRT gas tubes. On BRTs website. They explain that a .070 on their tube, is equivalent to a .068 gas port size in your barrel. .002 smaller, for every size. I’m not sure if the same drop applies to the gas block? The gas block is well made. Comes with 4 screws. 2 for holding In position. 2 with locking ends for final install. All my other barrels use BCM gas systems, with exception of a couple aforementioned EZ TUNE tubes. The YHM block doesn’t fit as tight as the BCM. Around the barrel. Nor in the gas block where the tube itself goes. So it’s not a nice snug fit. Not loose either. That’s why I gave 4 stars instead of 5. If YHM could tighten up the tolerances a bit. Be perfect. Take in mind you are paying half the price. So you can afford to buy more than one.