LaRue Tactical LT659 Aimpoint Comp M4/M4S QD Speed Lever Rifle Scope Mount Best QD mount for the Aimpoint Comp M4 and Comp M4-S optics Solution for the newest version of the US Army's M68 CCO (Close-Combat Optic) Precision-machined out of bar-stock aluminum QD Speed Lever provides outstanding return to zero; the optic can be removed, and replaced, without loss of zero. Guaranteed Complete with replacement mounting screws, wrench, vial of blue Locktite and instructions