Firearm with Double-Shot Trigger Assembly

Abstract

A firearm with a receiver body, a barrel, and a trigger assembly. The trigger assembly includes a trigger element movable between a pulled position and a released position. The trigger assembly is switchable between a safe mode that prevents the trigger element from moving to the pulled position, a semi-automatic mode that discharges a single round from the barrel responsive to each time the trigger element is moved to the pulled position, and a 2-shot mode that discharges an inintial round from the barrel when the trigger element is moved to the pulled position and then a subsequent round when the trigger element is moved to the released position.

1 . A firearm comprising:
 a receiver body;   a barrel extending from the receiver housing;   a trigger assembly with a trigger element movable between a pulled position and a released position, wherein the trigger assembly is switchable between (i) a safe mode that prevents the trigger element from moving to the pulled position; (ii) a semi-automatic mode that discharges a single round from the barrel responsive to each time the trigger element is moved to the pulled position; and (iii) a 2-shot mode that discharges an initial round from the barrel when the trigger element is moved to the pulled position and then a subsequent round when the trigger element is moved to the released position.   
     
     
         2 . The firearm of  claim 1 , wherein the trigger assembly further comprises:
 a hammer movable between a cocked position and a fired position;   a sear configured to engage at least a portion of the hammer to retain the hammer in the ready position, wherein the sear is configured to release the hammer responsive to the trigger element moving to the pulled position;   a sear catch configured to prevent the sear from engaging the hammer in the 2-shot mode after discharging the initial round from the barrel.   
     
     
         3 . The firearm of  claim 2 , wherein the hammer is configured to disengage the sear catch from the sear responsive to moving towards the fired position subsequent to discharging the initial round. 
     
     
         4 . The firearm of  claim 3 , wherein the hammer includes a transversely extending pin that is configured to disengage the sear catch from the sear responsive to the hammer moving towards the fired position subsequent to discharging the initial round. 
     
     
         5 . The firearm of  claim 2 , further comprising a safety selector configured to select between the safe mode, the semi-automatic mode, and the 2-shot mode. 
     
     
         6 . The firearm of  claim 5 , wherein the safety selector includes a cylindrical portion that blocks the trigger element from moving to the pulled position in the safe mode.  7 , The firearm of claim  6 , wherein the cylindrical portion includes a first pocket having a first depth and a second pocket having a second depth that is deeper than the first depth. 
     
     
         8 . The firearm of claim  7 , further comprising a pin extending from the trigger element, wherein the pin is received in the first pocket when the safety selector is in the semi-automatic mode. 
     
     
         9 . The firearm of  claim 8 , wherein the pin is received in the second pocket in the 2-shot mode. 
     
     
         10 . The firearm of  claim 9 , wherein the depth of the first pocket is dimensioned to limit travel of the trigger element to actuate the sear to release the hammer, but not allow the sear to be engaged by the sear catch. 
     
     
         11 . The firearm of  claim 10 , wherein the depth of the second pocket is dimensioned to allow the trigger element to travel a distance that both actuates the sear to release the hammer and allows the sear to be engaged by the sear catch. 
     
     
         12 . The firearm of  claim 6 , further comprising a secondary safety that limits travel of the sear in the semi-automatic mode to prevent the sear catch from engaging the sear. 
     
     
         13 . The firearm of  claim 12 , wherein the secondary safety comprises a groove in the cylindrical portion of the safety selector in which a leg of the sear rides, wherein in the semi-automatic mode, the groove limits travel of the sear to prevent engagement of the sear by the sear catch. 
     
     
         14 . The firearm of  claim 6 , further comprising a safety pin configured to disengage the sear catch from the sear responsive to a last round being discharged. 
     
     
         15 . A trigger assembly comprising:
 a trigger element movable between a pulled position and a released position;   a hammer movable between a cocked position and a fired position;   a sear, independently movable with respect to the trigger element, configured to engage at least a portion of the hammer to retain the hammer in the ready position, wherein the sear is configured to release the hammer responsive to the trigger element moving to the pulled position;   a safety selector switchable between (i) a safe mode that prevents the trigger element from moving to the pulled position; (ii) a semi-automatic mode that discharges a single round responsive to each time the trigger element is moved to the pulled position; and (iii) a 2-shot mode that discharges an initial round responsive to the trigger element moving to the pulled position and a subsequent round responsive to the trigger element moving to the released position; and   a sear catch configured to prevent the sear from engaging the hammer in the 2-shot mode after discharging the initial round responsive to moving the trigger element to the pulled position.   
     
     
         16 . The trigger assembly of  claim 15 , wherein the hammer includes a transversely extending pin that is configured to disengage the sear catch from the sear responsive to the hammer moving towards the fired position subsequent to discharging the initial round. 
     
     
         17 . The trigger assembly of  claim 15 , wherein the safety selector includes a cylindrical portion that blocks the trigger element from moving to the pulled position in the safe mode. 
     
     
         18 . The trigger assembly of  claim 17 , wherein the cylindrical portion includes a first pocket having a first depth and a second pocket having a second depth that is deeper than the first depth. 
     
     
         19 . The trigger assembly of  claim 18 , further comprising a pin extending from the trigger element, wherein the pin is configured to be received in the first pocket when the safety selector is in the semi-automatic mode. 
     
     
         20 . The trigger assembly of  claim 19 , wherein the pin is configured to be received in the second pocket in the 2-shot mode. 
     
     
         21 . The trigger assembly of  claim 20 , wherein the depth of the first pocket is dimensioned to limit travel of the trigger element to actuate the sear to release the hammer when the trigger element moves to the pulled position, but not allow the sear to be engaged by the sear catch. 
     
     
         22 . The trigger assembly of  claim 21 , wherein the depth of the second pocket is dimensioned to allow the trigger element to travel a distance that actuates both the sear to release the hammer and allows the sear to be engaged by the sear catch. 
     
     
         23 . The trigger assembly of  claim 15 , further comprising a secondary safety that limits travel of the sear in the semi-automatic mode to prevent the sear catch from engaging the sear. 
     
     
         24 . The trigger assembly of  claim 23 , wherein the secondary safety comprises a groove in the cylindrical portion of the safety selector in which a leg of the sear rides, wherein in the semi-automatic mode, the groove limits travel of the sear to prevent engagement of the sear by the sear catch. 
     
     
         25 . The trigger assembly of  claim 15 . further comprising a safety pin configured to disengage the sear catch from the sear responsive to a last round being discharged.