Cerus Gear Glock Gen5 Schematic Handgun Promat. Be the envy at the range and pair that Gen 5 with Cerus Gear’s NEW Glock® Gen 5 Schematic ProMat, and learning that new design will be a breeze. Constructed of 1/8″ (3mm) vulcanized rubber with a soft heat bonded polyester protects your firearm from scratches.