This compensator is designed to direct the gas on a forward direction, away from the shooter. Its architecture has been improved from the classic layout of the linear compensator. As a result, the six side holes are no longer parallel with the bullet hole, but at a slight angle for a swirl effect. Also, the front end of the compensator is optimized to increase the effect of bullet stabilizing. The outside diameter is .920", so it will blend in with the 10/22 bull barrels. At the rear there are 2 flats for wrench for easy installation. Bullet hole is dimensioned for 22 caliber.Threaded 1/2"-28tpi. CNC-machined out of steel, blued finish.