Adjustable gas block

1. An adjustable gas block system comprising:

an adjustment subassembly comprising:

a valve stem end with a front-most portion larger in diameter than a rear-most portion and a boss extending from a forward portion of the valve stem end;

a valve ring surrounding the boss of the valve stem end;

a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and

a valve rotator coupled to the valve threaded portion for adjusting the flow of gas;

a gas block assembly comprising:

a gas block through hole;

a first duct to direct pressurized gas from a barrel to a plenum;

a second duct to direct a regulated volume of gas to a gas operating system;

a seat valve to control the regulated volume of gas to the gas operating system; and

a gas block threaded portion for coupling to the valve threaded portion; and

wherein the adjustment subassembly is coupled to the gas block assembly.

2. The system of claim 1 , wherein the valve stem end further comprises a middle portion lesser in diameter than the rear-most portion.

3. The system of claim 1 , further comprising a first through hole in the boss and a second through hole in the valve threaded portion for receiving a first sub-assembly pin to couple the valve stem end to the valve threaded portion.

4. The system of claim 1 , further comprising one or more gas rings.

5. The system of claim 4 , wherein one or more gas rings are located between the valve stem end and the valve ring and one or more gas rings are located between the valve ring and the valve rotator.

6. The system of claim 5 , wherein the valve ring has a forward shoulder and a rear shoulder to each communicate with the one or more gas rings.

7. The system of claim 1 , wherein the threaded portion of the valve threaded portion is on a reduced diameter shoulder of the valve threaded portion.

8. The system of claim 7 , wherein a through hole in the valve threaded portion is on an unthreaded portion of the reduced diameter shoulder.

9. The system of claim 1 , wherein the valve rotator and valve threaded portion are a unitary component.

10. The system of claim 1 , wherein the valve rotator comprises a valve rotator boss at the rear of the valve rotator.

11. The system of claim 10 , wherein the valve rotator boss fits within an axial opening of the valve threaded portion to couple the valve rotator to the valve threaded portion.

12. The method of claim 1 , wherein the valve rotator comprises a ring of grooves.

13. The system of claim 12 , wherein the grooves are evenly spaced around a circumference of the valve rotator.

14. The system of claim 1 , wherein the valve rotator comprises one or more flat areas on a forward section of the valve rotator.

15. The system of claim 14 , further comprising a through hole extending between two flat areas on the forward section of the valve rotator.

16. The system of claim 1 , wherein the gas block assembly comprises a through hole for securing the gas block to a gas block journal on a rifle barrel.

17. The system of claim 1 , wherein an inner diameter of the plenum contacts an outer diameter of one or more gas rings.

18. The system of claim 1 , further comprising an exterior mounted torsion spring.

19. The system of claim 18 , wherein the exterior mounted torsion spring is in a detent.

20. The system of claim 1 , further comprising more than four grooves on the valve rotator to set adjustment of the adjustable gas block assembly.