Operating systems for electronically actuated firearms

1. A firearm, comprising:

a lower receiver and a trigger pivotal relative to the lower receiver, the lower receiver including a hammer moveable from a cocked position toward an uncocked position to fire the firearm, the lower receiver further including a sear assembly positionable to secure the hammer in the cocked position, wherein the hammer is releasably engageable to the sear assembly;

a grip assembly attached to the lower receiver; and

an operating system for electronically firing the firearm, the operating system including:

a switch actuator and a switch for electronically firing the firearm; and

a trigger lever connected to the trigger; and

a roller connected to the trigger lever, wherein the trigger lever is moveable in response to a pull of the trigger to displace the roller along the switch actuator to depress the switch actuator against the switch to fire the firearm.

2. The firearm of claim 1 , further comprising a casing in the grip assembly, and the roller is housed in the casing.

3. The firearm of claim 2 , further comprising an adjustment mechanism in the casing, wherein the adjustment mechanism is configured to adjust a force required to displace the roller in the casing.

4. The firearm of claim 3 , wherein the adjustment mechanism includes:

a ball member in contact with the roller;

an adjustment screw engaged to the casing; and

a spring between the ball member and the adjustment screw.

5. The firearm of claim 4 , wherein the casing includes a passage and the adjustment mechanism is housed in the passage.

6. The firearm of claim 2 , wherein the casing includes a set screw, and the set screw is configured to displace the roller against the switch actuator.

7. The firearm of claim 1 , wherein the trigger lever is connected to the roller at one end of the trigger lever, and an opposite end of the trigger lever is connected a rearwardly extending arm connected to the trigger.

8. The firearm of claim 1 , further comprising a fastening member attaching the grip assembly to the lower receiver, wherein the fastening member includes a slot and the trigger lever extends along the fastening member in the slot.

9. The firearm of claim 1 , further comprising a fastening member attaching the grip assembly to the lower receiver, wherein the fastening member includes a threaded shaft threadingly engaged to the lower receiver.

10. The firearm of claim 9 , further comprising a chassis engaged to the lower receiver via the fastening member.

11. The firearm of claim 10 , wherein the chassis includes:

a base engaged to the lower receiver with the fastener;

a lower rail extending from one end of the base; and

an upper rail extending from an opposite end of the base.

12. The firearm of claim 11 , wherein the grip assembly is attached to the lower rail and the upper rail of the chassis.

13. The firearm of claim 1 , wherein the trigger is pivotally coupled with the sear assembly, wherein the trigger includes a trigger arm extending rearwardly from the pivotal coupling of the trigger with the sear assembly, and the trigger lever is connected with a rearward end of the trigger arm.

14. The firearm of claim 13 , wherein:

the trigger lever includes an engagement arm;

the trigger arm includes a receptacle; and

the engagement arm of the trigger lever is engaged in the receptacle of the trigger arm.

15. The firearm of claim 13 , wherein:

the trigger lever includes an L-shaped engagement member at one end of the trigger lever;

the roller is engaged to the L-shaped engagement member; and

the trigger lever is configured to displace the roller to ride along the switch actuator associated with the switch to actuate the switch in response to a pull of the trigger.

16. An electronic firing system for firing a firearm by pulling a trigger, the system comprising:

a switch actuator engaged to a switch;

a trigger lever connectable to the trigger;

a fastening member configured to attach a grip assembly to a lower receiver of the firearm, wherein the trigger lever is reciprocally moveable along the fastening member; and

a roller engaged to the trigger lever, wherein the roller is configured to move along the switch actuator in response to a pull of the trigger that displaces the trigger lever, thereby displacing the switch actuator to engage the switch for electronically firing the firearm.

17. The system of claim 16 , wherein the fastening member is configured to guide longitudinal movement of the trigger lever along the fastening member in response to a pull of the trigger as the trigger lever is displaced.

18. The system of claim 16 , further comprising a casing mounted to the grip assembly, wherein:

the roller is housed in the casing mounted to the grip assembly; and

the casing includes an adjustment mechanism that is configured to adjust a force required to displace the roller by pulling the trigger.

19. The system of claim 18 , wherein the adjustment mechanism includes:

a ball member in contact with the roller;

an adjustment screw engaged to the casing; and

a spring between the ball member and the adjustment screw.

20. The system of claim 16 , further comprising a chassis engaged to the lower receiver via the fastening member, wherein the chassis includes:

a base engaged to the lower receiver with the fastener;

a lower rail extending from one end of the base; and

an upper rail extending from an opposite end of the base, wherein the grip assembly is mounted to the chassis via the lower and upper rails.