The listing pretty much sums it up... The O-Sight S is a closed emitter with charger. The Crimson Trace is from my old Glock 26. I am in McKinney and can meet Wednesday evening on 380 around Lake Forest. I work in Carrollton and can meet around lunchtime Thursday... Bass pro Grapevine or Rifle Gear on 121. Email or text with questions, or to set up a meet.