Wilson Combat Trak-Lock II Front Sight 12 Gauge Tritium. The TRAK-LOCK II gives you high speed sight acquisition and improved accuracy. This rugged sight is fully CNC machined from bar stock steel and features a tritium insert in the front sight for low light use. Easy to install complete instructions included.; High Speed Sight Acquisition and Improved Accuracy; Fully CNC Machined from Bar Stock Steel; US Patent #5210953Fits most 12 Gauge Remington 870 1100 and 1187 models. Trak-Lock Installation Instructions; Specifications for Wilson Combat Trak-Lock II Front Sight 12 Gauge: Manufacturer: Wilson Combat Front Sight Color: Tritium Color: Tritium Condition: New Gauge: 12 Package Contents: Wilson Combat Trak-Lock II Front Sight 12 Gauge Wilson Combat SGTL2-TF-12FO: Trak-Lock II Front Sight 12 Gauge Tritium