Gas regulator and locking front sight for a firearm and firearm with gas regulator and locking front sight

1. A gas regulator for a rifle, comprising:

an elongated member having a first end and a second end;

a head portion located at the first end, the head portion having a larger periphery than the first end;

a pair of openings passing through the elongated member, wherein one of the pair of openings is larger than the other one of the pair of openings;

a recessed area located at the second end;

another recessed area located on a surface of the elongated member between the first end and the second end; and

a pair of detent openings being spaced from each other and located within the another recessed area, wherein one of the pair of detent openings located in the another recessed area is closer to the first end than the other one of the pair of detent openings located in the another recessed area, wherein the pair of detent openings are perpendicularly arranged with respect to the pair of openings.

2. The gas regulator as in claim 1 , wherein one end of each of the pair of openings passing through the elongated member are located within a corresponding recessed area located on the surface of the elongated member between the first end and the second end.

3. The gas regulator as in claim 1 , further comprising a gas block, wherein the elongated member is slidably received within an opening of the gas block for movement between a first position and a second position, wherein one of the pair of openings through the elongated member provides fluid communication between a pair of openings in the gas block when the elongated member is in the first position and another one of the pair of openings through the elongated member provides fluid communication between the pair of openings in the gas block when the elongated member is in the second position.

4. The gas regulator as in claim 3 , wherein the head portion is received within a counter sink portion of the gas block when the elongated member is in the first position.

5. The gas regulator as in claim 4 , wherein the head portion protrudes from the gas block when the elongated member is in the second position.

6. The gas regulator as in claim 5 , further comprising a spring biased detent configured to releasably retain the elongated member in the first and second positions by engaging one of the pair of detent openings.

7. The gas regulator as in claim 3 , wherein the gas block is configured to be mounted about a barrel of the rifle and wherein one of the pair of openings of the gas block is in fluid communication with the barrel when the gas block is mounted about the barrel.

8. The gas regulator as in claim 7 , wherein the rifle is an automatic or semi-automatic rifle.

9. The gas regulator as in claim 7 , wherein the head portion is received within a counter sink portion of the gas block when the elongated member is in the first position.

10. The gas regulator as in claim 9 , wherein the head portion protrudes from the gas block when the elongated member is in the second position.

11. The gas regulator as in claim 10 , further comprising: a spring biased detent configured to releasably retain the elongated member in the first and second positions by engaging at least one of the pair of detent openings.

12. A gas block for a rifle, comprising:

a gas regulator having a first end and a second end;

a pair of openings passing through the gas regulator, wherein one of the pair of openings is larger than the other one of the pair of openings;

wherein the gas regulator is slidably received within an opening of the gas block for movement between a first position and a second position, wherein one of the pair of openings through the gas regulator provides fluid communication between a pair of openings in the gas block when the gas regulator is in the first position and another one of the pair of openings through the gas regulator provides fluid communication between the pair of openings in the gas block when the gas regulator is in the second position;

a spring biased detent releasably retaining the gas regulator in the first and second positions by engaging a pair of detent openings located in a recessed area of the gas regulator, the pair of detent openings being spaced from each other and located within the recessed area located on a surface of the gas regulator between the first end and the second end, wherein one of the pair of detent openings located in the recessed area is closer to the first end than the other one of the pair of detent openings located in the recessed area, wherein the pair of detent openings are perpendicularly arranged with respect to the pair of openings extending through the gas regulator; and

wherein the gas block further comprises a front sight of the rifle, the front sight being pivotally mounted to the gas block for movement between a first locked position and a second locked position, the first locked position being offset from the second locked position.

13. The gas block as in claim 12 , further comprising a head portion located at the first end, wherein the head portion is received within a counter sink portion of the gas block when the gas regulator is in the first position.

14. The gas block as in claim 13 , wherein the head portion protrudes from the gas block when the gas regulator is in the second position.

15. The gas block as in claim 14 , further comprising a recess located at the second end of the gas regulator.

16. A method for regulating gas pressure in a rifle,

comprising:

slidably mounting an elongated member within an opening of a gas block of the rifle for movement between a first position and a second position;

aligning a first one of a pair of openings extending through the elongated member with a pair of openings located in the gas block when the elongated member is in the first position;

aligning a second one of the pair of openings extending through the elongated member with the pair of openings located in the gas block when the elongated member is in the second position, wherein one of the pair of openings extending through the elongated member is larger than the other one of the pair of openings extending through the elongated member; and

retaining the elongated member at either the first position or the second position by engaging one of a pair of detent openings located in a recessed area of the elongated member with a spring biased detent, the pair of detent openings being spaced from each other and located within the recessed area located on a surface of the elongated member, the recessed area being located between a first end and a second end of the elongated member, wherein one of the pair of detent openings located in the recessed area is closer to the first end than the other one of the pair of detent openings located in the recessed area, wherein the pair of detent openings are perpendicularly arranged with respect to the pair of openings extending through the elongated member.

17. The method as in claim 16 , wherein each one of the pair of openings extending through the elongated member has an end located within a corresponding recessed area located on the surface of the elongated member.

18. The method as in claim 17 , wherein the elongated member further comprises a head portion located at the first end, wherein the head portion is received within a counter sink portion of the gas block when the gas regulator is in the first position and wherein the head portion protrudes from the gas block when the gas regulator is in the second position.

19. The method as in claim 18 , wherein the elongated member further comprises a recess located at the second end of the elongated member.

20. The method as in claim 16 , wherein the gas block is mounted to a barrel of the rifle and wherein one of the pair of openings of the gas block extends from the opening of the gas block to the barrel.