Excellent condition, 50$ shipped For use with: surefire m300, m600 scout (except m600 aa), streamlight protac rail mount 1, 2 and all replacement m300 and m600 bodies, including backbone and m-lok® compliant rails Weight: .711 oz Material: 6061-T6 aluminum black anodized per mil-spec mil-a-8625 Directly attaches to any M-LOK® compliant rail surface Ambidextrous with 7 total mounting solutions on 7 sided M-LOK® rail system