Up for sale or trade is a Streamlight Racker this unit is a drop in part for Mossberg 500, 590, as well as I believe the shockwave and maverick 88 (the later 2 may require fitting) this is the 850 lumen model, And is in excellent condition. There is some slight stippling on the underside of the handguard to make it a little more grippy. These units are very durable and have a great track record with LE use. The benefit of this design is it keeps the beam of light uninterrupted by the above barrel and mag tube . It has ambidextrous controls and momentary and constant on. This is the Ideal unit for a home defense shotgun. Perfect for illuminating any potential trespassers on your property from raccoons to crackheads. The only reason I’m selling it is I recently was gifted the surefire equivalent from a friend.