SureFire RM45L Off-Set Mount for a Scout Light (Swing Lever Clamp Models Only) Attaches Swing-Lever clamp-equipped Scout Lights to MIL-STD-1913 (Picatinny) rail forends--positioning the light in the off-set position--for lower profile and reduced snag potential Lightweight, durable construction-aerospace aluminum coated with Mil-Spec Type III hard anodizing Fits Swing Lever Clamp Models Only Backed by SureFire's No-Hassle Guarantee Compatible with models: M620, M620V, M620P