With the dictator adjustable gas block, you can now control the rate of fire, gas pressure, and the reliability of your rifle.Choose one of 9 gas positions to dictate the gas pressure and cyclic rate.Adjusting the gas system is quick and painless.Choose one of three methods to dial the gas regulator: a flat screwdriver, 3/32 hex wrench, or the dictator wrench.The dictator adjustable gas block features a straight gas tube.Finish: QPQ NitrideModel: Adjustable Gas Block