Truglo TFO Tactical Universal Shotgun Front Sight Unbelievable transition through ALL LIGHT CONDITIONS Uses the BRIGHTEST SWISS TRITIUM AVAILABLE; GLOWS IN THE DARKno batteries or light exposure required OVERSIZED FIBER-OPTIC for fast sight acquisition; CONCEALED FIBER cannot be seen by target VERSATILE FITfits all 12-gauge shotguns without rib ASSEMBLED IN THE USA; 12-year limited warranty