Nice Mark!Published by Marc Steele on April 7, 2022April 7, 2022 Topical marks can have a great contrast when used coated material. Optics and calibrations are easily marked with a laser. Make Columbia Marking Tools your source for all your ATF required firearms marking machines. firearms@columbiamt.com Categories: FirearmLaser Mark ExamplesLaser Marking Tags: Firearm MarkingLaser Marking Marc Steele Marc has been in the marking business for over 15 years. He provides technical assistance through emails and online chat.