How To Install A Streamlight TL-Racker On A Mossberg 500/590/590A1.

          This is how you install the Streamlight TL-Racker forend mounted weapon light on your Mossberg 500/590/590A1. If you have a Mossberg Maverick 88, you will not be able to use this weapon light… Unless, you switch out its pump assembly with one of the other models mentioned above.