Haley Strategic Partners release the Thorntail 2 Light Mounts made to fit your preferred rail system... "The new Thorntail 2 line of light mounts are here. They feature a refined design across all models which now include the long-awaited M-LOK® line of mounts. The new capture screw design is a new edition to all SBR, and full length mounts, while the M-LOK and Keymod mounts use a lightweight machined cap for an even lower and lighter profile."