Fire selector system for selecting between automatic and semi-automatic operation of a gun

A device for converting a semi-automatic gun into an automatic gun, the gun having a trigger bar, a reciprocating slide, and a longitudinal firing mechanism, the trigger bar mounted below the firing mechanism and movable into a first position in which the trigger bar engages the firing mechanism and prevents forward motion of the firing mechanism following trigger activation, thereby effecting semi-automatic operation, the device comprising:

• a member mountable on the reciprocating slide of the gun and in operative relationship with the trigger bar of the gun, the member movable into an activating longitudinal position in which contact between the member and a contact area of the trigger bar occurs to urge the trigger bar away from its first position following trigger activation thereby effecting automatic operation of the gun, wherein the member is reciprocatable between forward and rearward longitudinal positions, the forward longitudinal position allowing the member to assume its activating longitudinal position for said automatic operation of the gun, the rearward longitudinal position preventing the member from assuming its activating longitudinal position, thereby allowing the trigger bar to assume and retain its first position following trigger activation to effect said semi-automatic operation of the gun;
• and wherein the device further comprises a user switch coupled for longitudinally moving the member, the user switch having a first position corresponding to the forward longitudinal position of the member and a second position corresponding to the rearward longitudinal position of the member.