The Thorntail X M-LOK Inline Light Mount enables light placement in seven positions. The low profile design replaces the stock Picatinny (1913) rail adapter mounting the light directly to the rail while maintaining clearance for thumb-over-bore light activation. The M-LOK Inline Light Mount enables light placement in four positions around the rail.Features : Anodized Black Fits M-LOK (1) Thorntail X M-LOK Inline Light Mount "(2) M-LOK Mount Screw and T-Nut (10-24 x 3/8")" "(2) Light Body Screws (8-32 x 1/4")"