Streamlight Racker light for the 870, $90. Basically half of what I paid when they originally came out.
https://botach.com/streamlight-tl-r...on-870-1187-850-lumens/?avad=190366_c282cc8d1
https://botach.com/streamlight-tl-r...on-870-1187-850-lumens/?avad=190366_c282cc8d1