Glass Lens for SureFire 6p, C2 etc. (AR Coated) Lens Size: 28.5 x 2.9mm Fits: SureFire 6P, 9P, C2 etc. JetBeam JET-III-M. Night-Ops Gladius & Falcata. Xeno F7, F8, G10 etc. Ultra Clear Lens with AR coating on both side Approximately 98-99% transmittance Increases Light output by up to 10% (over a normal lens)