This is a great red dot.  It has tritium and fiber optic.  The problem with this type of sight was washout going into bright light. Now meprolight sells a battery illuminator like aimpoint and eotech.  I bought it and had it factory installed.  It was 650.00 for everything.  This is new in the box. Will sell for 350.00 this is really armored up. Qd mount. I will regret selling it but need to fix my mp5. Need the cash. I'm in suprise but can meet further in town.