System for determining muzzle velocity of a firearm

1. A system for determining the muzzle velocity of a firearm, comprising:

a firearm having a barrel and a gas block;

a first sensor arranged at the gas block configured to determine a change in pressure within the gas block;

a second sensor positioned at an end of the barrel for detecting a pressure wave produced by a projectile fired by the firearm; and

a control unit in communication with the first sensor and the second sensor and configured to determine a velocity of the projectile based on information received from the first sensor and the second sensor.

2. The system of claim 1 , wherein the second sensor is an acoustic pressure sensor.

3. The system of claim 2 , wherein the acoustic pressure sensor is arranged on a rod extending from the end of the barrel.

4. The system of claim 1 , wherein the first sensor is a pressure transducer.

5. The system of claim 4 , wherein the first sensor is positioned within a hole formed in the gas block.

6. The system of claim 1 , wherein the first sensor is a strain gauge.

7. The system of claim 6 , wherein the strain gauge comprises a piezoelectric material.

8. The system of claim 1 , wherein the control unit is configured to apply a correction to the muzzle velocity as calculated based on the information received from the first and second sensors.

9. The system of claim 1 , further comprising a third sensor arranged on the barrel of the firearm and spaced from each of the first and second sensors.

10. A system for determining the muzzle velocity of a firearm, comprising:

a first sensor positioned on a gas block or a gas tube of the firearm configured to determine a change in pressure within the gas block or the gas tube;

a second sensor positioned at an end of a barrel of the firearm configured to detect a pressure wave produced by a projectile fired by the firearm; and

a control unit in communication with the first sensor and the second sensor that is configured to determine a muzzle velocity based on information received from the first sensor and the second sensor.

11. The system of claim 10 , wherein the first sensor comprises a pressure sensor.

12. The system of claim 10 , wherein the first sensor comprises a strain gauge.

13. The system of claim 10 , wherein the second sensor comprises an acoustic pressure sensor.

14. The system of claim 13 , wherein the acoustic pressure sensor is arranged on a rod that extends from the end of the barrel.

15. The system of claim 14 , further comprising a shroud positioned so as to cover the rod and the acoustic pressure sensor.

16. The system of claim 10 , wherein the first sensor, the second sensor, and the control unit are connected by one or more wires.

17. A method for determining a muzzle velocity of a firearm, the method comprising:

detecting a change in pressure within a gas system of a firearm via a pressure sensor;

detecting a pressure wave produced by a projectile escaping a barrel of the firearm via an acoustic pressure sensor arranged at an end of the barrel; and

calculating, by a control unit in communication with the pressure sensor and the acoustic pressure sensor, a muzzle velocity of the projectile based on data from the pressure sensor and the acoustic pressure sensor.

18. The method of claim 17 , further comprising:

applying a correction factor to the calculated muzzle velocity.

19. The method of claim 17 , wherein the pressure sensor is arranged on a gas block of the firearm.

20. The method of claim 17 , wherein calculating the muzzle velocity comprises determining a time between detection of the change of pressure and detection of the pressure wave.